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252b5132 | 1 | /* BFD back-end data structures for ELF files. |
219d1afa | 2 | Copyright (C) 1992-2018 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Cygnus Support. |
4 | ||
5e8d7549 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
5e8d7549 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
5e8d7549 | 10 | (at your option) any later version. |
252b5132 | 11 | |
5e8d7549 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
5e8d7549 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | #ifndef _LIBELF_H_ | |
23 | #define _LIBELF_H_ 1 | |
24 | ||
25 | #include "elf/common.h" | |
252b5132 | 26 | #include "elf/external.h" |
4fbb74a6 | 27 | #include "elf/internal.h" |
252b5132 RH |
28 | #include "bfdlink.h" |
29 | ||
55172d69 PA |
30 | #ifdef __cplusplus |
31 | extern "C" { | |
32 | #endif | |
33 | ||
d9bc7a44 | 34 | /* The number of entries in a section is its size divided by the size |
51b64d56 | 35 | of a single entry. This is normally only applicable to reloc and |
ce98a316 NC |
36 | symbol table sections. |
37 | PR 9934: It is possible to have relocations that do not refer to | |
38 | symbols, thus it is also possible to have a relocation section in | |
39 | an object file, but no symbol table. */ | |
40 | #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0) | |
d9bc7a44 | 41 | |
252b5132 RH |
42 | /* If size isn't specified as 64 or 32, NAME macro should fail. */ |
43 | #ifndef NAME | |
c39a58e6 AM |
44 | #if ARCH_SIZE == 64 |
45 | #define NAME(x, y) x ## 64 ## _ ## y | |
252b5132 | 46 | #endif |
c39a58e6 AM |
47 | #if ARCH_SIZE == 32 |
48 | #define NAME(x, y) x ## 32 ## _ ## y | |
252b5132 RH |
49 | #endif |
50 | #endif | |
51 | ||
52 | #ifndef NAME | |
c39a58e6 | 53 | #define NAME(x, y) x ## NOSIZE ## _ ## y |
252b5132 RH |
54 | #endif |
55 | ||
56 | #define ElfNAME(X) NAME(Elf,X) | |
57 | #define elfNAME(X) NAME(elf,X) | |
58 | ||
59 | /* Information held for an ELF symbol. The first field is the | |
60 | corresponding asymbol. Every symbol is an ELF file is actually a | |
61 | pointer to this structure, although it is often handled as a | |
62 | pointer to an asymbol. */ | |
63 | ||
64 | typedef struct | |
65 | { | |
66 | /* The BFD symbol. */ | |
67 | asymbol symbol; | |
68 | /* ELF symbol information. */ | |
69 | Elf_Internal_Sym internal_elf_sym; | |
70 | /* Backend specific information. */ | |
71 | union | |
72 | { | |
73 | unsigned int hppa_arg_reloc; | |
c39a58e6 AM |
74 | void *mips_extr; |
75 | void *any; | |
252b5132 RH |
76 | } |
77 | tc_data; | |
78 | ||
79 | /* Version information. This is from an Elf_Internal_Versym | |
80 | structure in a SHT_GNU_versym section. It is zero if there is no | |
81 | version information. */ | |
82 | unsigned short version; | |
83 | ||
84 | } elf_symbol_type; | |
85 | \f | |
2b0f7ef9 | 86 | struct elf_strtab_hash; |
5cab59f6 AM |
87 | struct got_entry; |
88 | struct plt_entry; | |
2b0f7ef9 | 89 | |
a50b1753 NC |
90 | union gotplt_union |
91 | { | |
92 | bfd_signed_vma refcount; | |
93 | bfd_vma offset; | |
94 | struct got_entry *glist; | |
95 | struct plt_entry *plist; | |
96 | }; | |
97 | ||
98 | struct elf_link_virtual_table_entry | |
99 | { | |
100 | /* Virtual table entry use information. This array is nominally of size | |
101 | size/sizeof(target_void_pointer), though we have to be able to assume | |
102 | and track a size while the symbol is still undefined. It is indexed | |
103 | via offset/sizeof(target_void_pointer). */ | |
104 | size_t size; | |
105 | bfd_boolean *used; | |
106 | ||
107 | /* Virtual table derivation info. */ | |
108 | struct elf_link_hash_entry *parent; | |
109 | }; | |
110 | ||
422f1182 L |
111 | /* ELF symbol version. */ |
112 | enum elf_symbol_version | |
113 | { | |
114 | unknown = 0, | |
115 | unversioned, | |
116 | versioned, | |
117 | versioned_hidden | |
118 | }; | |
119 | ||
252b5132 RH |
120 | /* ELF linker hash table entries. */ |
121 | ||
122 | struct elf_link_hash_entry | |
123 | { | |
124 | struct bfd_link_hash_entry root; | |
125 | ||
126 | /* Symbol index in output file. This is initialized to -1. It is | |
97196564 L |
127 | set to -2 if the symbol is used by a reloc. It is set to -3 if |
128 | this symbol is defined in a discarded section. */ | |
252b5132 RH |
129 | long indx; |
130 | ||
252b5132 RH |
131 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains |
132 | -1 if this is not a dynamic symbol. */ | |
30b30c21 RH |
133 | /* ??? Note that this is consistently used as a synonym for tests |
134 | against whether we can perform various simplifying transformations | |
135 | to the code. (E.g. changing a pc-relative jump to a PLT entry | |
136 | into a pc-relative jump to the target function.) That test, which | |
137 | is often relatively complex, and someplaces wrong or incomplete, | |
138 | should really be replaced by a predicate in elflink.c. | |
139 | ||
140 | End result: this field -1 does not indicate that the symbol is | |
141 | not in the dynamic symbol table, but rather that the symbol is | |
142 | not visible outside this DSO. */ | |
252b5132 RH |
143 | long dynindx; |
144 | ||
a90b9fca AM |
145 | /* If this symbol requires an entry in the global offset table, the |
146 | processor specific backend uses this field to track usage and | |
5cab59f6 AM |
147 | final offset. Two schemes are supported: The first assumes that |
148 | a symbol may only have one GOT entry, and uses REFCOUNT until | |
149 | size_dynamic_sections, at which point the contents of the .got is | |
150 | fixed. Afterward, if OFFSET is -1, then the symbol does not | |
151 | require a global offset table entry. The second scheme allows | |
152 | multiple GOT entries per symbol, managed via a linked list | |
153 | pointed to by GLIST. */ | |
a50b1753 | 154 | union gotplt_union got; |
a90b9fca AM |
155 | |
156 | /* Same, but tracks a procedure linkage table entry. */ | |
5cab59f6 | 157 | union gotplt_union plt; |
a90b9fca AM |
158 | |
159 | /* Symbol size. */ | |
160 | bfd_size_type size; | |
161 | ||
252b5132 | 162 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
f5385ebf | 163 | unsigned int type : 8; |
252b5132 | 164 | |
9b234ee9 | 165 | /* Symbol st_other value, symbol visibility. */ |
f5385ebf | 166 | unsigned int other : 8; |
252b5132 | 167 | |
35fc36a8 RS |
168 | /* The symbol's st_target_internal value (see Elf_Internal_Sym). */ |
169 | unsigned int target_internal : 8; | |
170 | ||
7ae26bc1 AM |
171 | /* Symbol is referenced by a non-shared object (other than the object |
172 | in which it is defined). */ | |
f5385ebf | 173 | unsigned int ref_regular : 1; |
252b5132 | 174 | /* Symbol is defined by a non-shared object. */ |
f5385ebf | 175 | unsigned int def_regular : 1; |
252b5132 | 176 | /* Symbol is referenced by a shared object. */ |
f5385ebf | 177 | unsigned int ref_dynamic : 1; |
252b5132 | 178 | /* Symbol is defined by a shared object. */ |
f5385ebf | 179 | unsigned int def_dynamic : 1; |
7ae26bc1 AM |
180 | /* Symbol has a non-weak reference from a non-shared object (other than |
181 | the object in which it is defined). */ | |
f5385ebf | 182 | unsigned int ref_regular_nonweak : 1; |
252b5132 | 183 | /* Dynamic symbol has been adjustd. */ |
f5385ebf | 184 | unsigned int dynamic_adjusted : 1; |
252b5132 | 185 | /* Symbol needs a copy reloc. */ |
f5385ebf | 186 | unsigned int needs_copy : 1; |
252b5132 | 187 | /* Symbol needs a procedure linkage table entry. */ |
f5385ebf | 188 | unsigned int needs_plt : 1; |
252b5132 | 189 | /* Symbol appears in a non-ELF input file. */ |
f5385ebf | 190 | unsigned int non_elf : 1; |
422f1182 L |
191 | /* Symbol version information. */ |
192 | ENUM_BITFIELD (elf_symbol_version) versioned : 2; | |
252b5132 | 193 | /* Symbol was forced to local scope due to a version script file. */ |
f5385ebf | 194 | unsigned int forced_local : 1; |
55255dae L |
195 | /* Symbol was forced to be dynamic due to a version script file. */ |
196 | unsigned int dynamic : 1; | |
252b5132 | 197 | /* Symbol was marked during garbage collection. */ |
f5385ebf | 198 | unsigned int mark : 1; |
7843f00e ILT |
199 | /* Symbol is referenced by a non-GOT/non-PLT relocation. This is |
200 | not currently set by all the backends. */ | |
f5385ebf | 201 | unsigned int non_got_ref : 1; |
f6e332e6 AM |
202 | /* Symbol has a definition in a shared object. |
203 | FIXME: There is no real need for this field if def_dynamic is never | |
204 | cleared and all places that test def_dynamic also test def_regular. */ | |
f5385ebf | 205 | unsigned int dynamic_def : 1; |
ee659f1f AM |
206 | /* Symbol has a non-weak reference from a shared object. */ |
207 | unsigned int ref_dynamic_nonweak : 1; | |
c6585bbb JJ |
208 | /* Symbol is referenced with a relocation where C/C++ pointer equality |
209 | matters. */ | |
f5385ebf | 210 | unsigned int pointer_equality_needed : 1; |
3e7a7d11 NC |
211 | /* Symbol is a unique global symbol. */ |
212 | unsigned int unique_global : 1; | |
b8417128 AM |
213 | /* Symbol is defined by a shared library with non-default visibility |
214 | in a read/write section. */ | |
6cabe1ea | 215 | unsigned int protected_def : 1; |
cbd0eecf L |
216 | /* Symbol is __start_SECNAME or __stop_SECNAME to mark section |
217 | SECNAME. */ | |
218 | unsigned int start_stop : 1; | |
60d67dc8 AM |
219 | /* Symbol is or was a weak defined symbol from a dynamic object with |
220 | a strong defined symbol alias. U.ALIAS points to a list of aliases, | |
221 | the definition having is_weakalias clear. */ | |
222 | unsigned int is_weakalias : 1; | |
f6e332e6 AM |
223 | |
224 | /* String table index in .dynstr if this is a dynamic symbol. */ | |
225 | unsigned long dynstr_index; | |
226 | ||
227 | union | |
228 | { | |
60d67dc8 AM |
229 | /* Points to a circular list of non-function symbol aliases. */ |
230 | struct elf_link_hash_entry *alias; | |
f6e332e6 AM |
231 | |
232 | /* Hash value of the name computed using the ELF hash function. | |
233 | Used part way through size_dynamic_sections, after we've finished | |
60d67dc8 | 234 | with aliases. */ |
f6e332e6 AM |
235 | unsigned long elf_hash_value; |
236 | } u; | |
237 | ||
238 | /* Version information. */ | |
239 | union | |
240 | { | |
241 | /* This field is used for a symbol which is not defined in a | |
242 | regular object. It points to the version information read in | |
243 | from the dynamic object. */ | |
244 | Elf_Internal_Verdef *verdef; | |
245 | /* This field is used for a symbol which is defined in a regular | |
246 | object. It is set up in size_dynamic_sections. It points to | |
247 | the version information we should write out for this symbol. */ | |
248 | struct bfd_elf_version_tree *vertree; | |
249 | } verinfo; | |
250 | ||
cbd0eecf L |
251 | union |
252 | { | |
253 | /* For __start_SECNAME and __stop_SECNAME symbols, record the first | |
254 | input section whose section name is SECNAME. */ | |
255 | asection *start_stop_section; | |
256 | ||
257 | /* Vtable information. */ | |
258 | struct elf_link_virtual_table_entry *vtable; | |
259 | } u2; | |
252b5132 RH |
260 | }; |
261 | ||
60d67dc8 AM |
262 | /* Return the strong definition for a weak symbol with aliases. */ |
263 | ||
264 | static inline struct elf_link_hash_entry * | |
265 | weakdef (struct elf_link_hash_entry *h) | |
266 | { | |
267 | while (h->is_weakalias) | |
268 | h = h->u.alias; | |
269 | return h; | |
270 | } | |
271 | ||
586119b3 | 272 | /* Will references to this symbol always reference the symbol |
2676a7d9 | 273 | in this object? */ |
986a241f | 274 | #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
f6c52c13 | 275 | _bfd_elf_symbol_refs_local_p (H, INFO, 0) |
586119b3 AM |
276 | |
277 | /* Will _calls_ to this symbol always call the version in this object? */ | |
986a241f | 278 | #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
f6c52c13 | 279 | _bfd_elf_symbol_refs_local_p (H, INFO, 1) |
586119b3 | 280 | |
62cd30f1 L |
281 | /* Whether an undefined weak symbol should resolve to its link-time |
282 | value, even in PIC or PIE objects. */ | |
283 | #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \ | |
284 | ((H)->root.type == bfd_link_hash_undefweak \ | |
285 | && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \ | |
286 | || (INFO)->dynamic_undefined_weak == 0)) | |
287 | ||
7e2294f9 | 288 | /* Common symbols that are turned into definitions don't have the |
c4621b33 AM |
289 | DEF_REGULAR flag set, so they might appear to be undefined. |
290 | Symbols defined in linker scripts also don't have DEF_REGULAR set. */ | |
7e2294f9 | 291 | #define ELF_COMMON_DEF_P(H) \ |
f5385ebf AM |
292 | (!(H)->def_regular \ |
293 | && !(H)->def_dynamic \ | |
7e2294f9 AO |
294 | && (H)->root.type == bfd_link_hash_defined) |
295 | ||
30b30c21 RH |
296 | /* Records local symbols to be emitted in the dynamic symbol table. */ |
297 | ||
298 | struct elf_link_local_dynamic_entry | |
299 | { | |
300 | struct elf_link_local_dynamic_entry *next; | |
301 | ||
302 | /* The input bfd this symbol came from. */ | |
303 | bfd *input_bfd; | |
304 | ||
305 | /* The index of the local symbol being copied. */ | |
306 | long input_indx; | |
307 | ||
308 | /* The index in the outgoing dynamic symbol table. */ | |
309 | long dynindx; | |
3e932841 | 310 | |
30b30c21 RH |
311 | /* A copy of the input symbol. */ |
312 | Elf_Internal_Sym isym; | |
313 | }; | |
314 | ||
f5d44ba0 AM |
315 | struct elf_link_loaded_list |
316 | { | |
317 | struct elf_link_loaded_list *next; | |
318 | bfd *abfd; | |
319 | }; | |
320 | ||
126495ed | 321 | /* Structures used by the eh_frame optimization code. */ |
126495ed AM |
322 | struct eh_cie_fde |
323 | { | |
155eaaa0 RS |
324 | union { |
325 | struct { | |
ca92cecb RS |
326 | /* If REMOVED == 1, this is the CIE that the FDE originally used. |
327 | The CIE belongs to the same .eh_frame input section as the FDE. | |
328 | ||
329 | If REMOVED == 0, this is the CIE that we have chosen to use for | |
330 | the output FDE. The CIE's REMOVED field is also 0, but the CIE | |
c2aaac08 AM |
331 | might belong to a different .eh_frame input section from the FDE. |
332 | ||
333 | May be NULL to signify that the FDE should be discarded. */ | |
155eaaa0 | 334 | struct eh_cie_fde *cie_inf; |
9d0a14d3 | 335 | struct eh_cie_fde *next_for_section; |
155eaaa0 | 336 | } fde; |
ca92cecb | 337 | struct { |
184d07da | 338 | /* CIEs have three states: |
fc802241 | 339 | |
184d07da RS |
340 | - REMOVED && !MERGED: Slated for removal because we haven't yet |
341 | proven that an FDE needs it. FULL_CIE, if nonnull, points to | |
342 | more detailed information about the CIE. | |
fc802241 | 343 | |
184d07da RS |
344 | - REMOVED && MERGED: We have merged this CIE with MERGED_WITH, |
345 | which may not belong to the same input section. | |
346 | ||
347 | - !REMOVED: We have decided to keep this CIE. SEC is the | |
348 | .eh_frame input section that contains the CIE. */ | |
fc802241 | 349 | union { |
184d07da | 350 | struct cie *full_cie; |
07d6d2b8 AM |
351 | struct eh_cie_fde *merged_with; |
352 | asection *sec; | |
fc802241 | 353 | } u; |
9d0a14d3 | 354 | |
18e04883 RS |
355 | /* The offset of the personality data from the start of the CIE, |
356 | or 0 if the CIE doesn't have any. */ | |
357 | unsigned int personality_offset : 8; | |
358 | ||
d7153c4a AM |
359 | /* Length of augmentation. aug_str_len is the length of the |
360 | string including null terminator. aug_data_len is the length | |
361 | of the rest up to the initial insns. */ | |
362 | unsigned int aug_str_len : 3; | |
363 | unsigned int aug_data_len : 5; | |
364 | ||
9d0a14d3 RS |
365 | /* True if we have marked relocations associated with this CIE. */ |
366 | unsigned int gc_mark : 1; | |
9f4b847e RS |
367 | |
368 | /* True if we have decided to turn an absolute LSDA encoding into | |
184d07da | 369 | a PC-relative one. */ |
9f4b847e | 370 | unsigned int make_lsda_relative : 1; |
6b2cc140 | 371 | |
18e04883 RS |
372 | /* True if we have decided to turn an absolute personality |
373 | encoding into a PC-relative one. */ | |
374 | unsigned int make_per_encoding_relative : 1; | |
375 | ||
376 | /* True if the CIE contains personality data and if that | |
377 | data uses a PC-relative encoding. Always true when | |
378 | make_per_encoding_relative is. */ | |
6b2cc140 RS |
379 | unsigned int per_encoding_relative : 1; |
380 | ||
2e0ce1c8 AM |
381 | /* True if the CIE contains personality data aligned to a |
382 | multiple of eight bytes. */ | |
383 | unsigned int per_encoding_aligned8 : 1; | |
384 | ||
6b2cc140 RS |
385 | /* True if we need to add an 'R' (FDE encoding) entry to the |
386 | CIE's augmentation data. */ | |
387 | unsigned int add_fde_encoding : 1; | |
184d07da RS |
388 | |
389 | /* True if we have merged this CIE with another. */ | |
390 | unsigned int merged : 1; | |
18e04883 RS |
391 | |
392 | /* Unused bits. */ | |
d7153c4a | 393 | unsigned int pad1 : 9; |
ca92cecb | 394 | } cie; |
155eaaa0 RS |
395 | } u; |
396 | unsigned int reloc_index; | |
126495ed | 397 | unsigned int size; |
fda3ecf2 | 398 | unsigned int offset; |
126495ed | 399 | unsigned int new_offset; |
155eaaa0 RS |
400 | unsigned int fde_encoding : 8; |
401 | unsigned int lsda_encoding : 8; | |
402 | unsigned int lsda_offset : 8; | |
6b2cc140 RS |
403 | |
404 | /* True if this entry represents a CIE, false if it represents an FDE. */ | |
822392ce | 405 | unsigned int cie : 1; |
6b2cc140 RS |
406 | |
407 | /* True if this entry is currently marked for removal. */ | |
822392ce | 408 | unsigned int removed : 1; |
6b2cc140 RS |
409 | |
410 | /* True if we need to add a 'z' (augmentation size) entry to the CIE's | |
411 | augmentation data, and an associated byte to each of the CIE's FDEs. */ | |
353057a5 | 412 | unsigned int add_augmentation_size : 1; |
6b2cc140 RS |
413 | |
414 | /* True if we have decided to convert absolute FDE relocations into | |
415 | relative ones. This applies to the first relocation in the FDE, | |
416 | which is against the code that the FDE describes. */ | |
822392ce | 417 | unsigned int make_relative : 1; |
6b2cc140 RS |
418 | |
419 | /* Unused bits. */ | |
420 | unsigned int pad1 : 4; | |
421 | ||
ac685e6a | 422 | unsigned int *set_loc; |
126495ed AM |
423 | }; |
424 | ||
425 | struct eh_frame_sec_info | |
426 | { | |
427 | unsigned int count; | |
184d07da | 428 | struct cie *cies; |
126495ed AM |
429 | struct eh_cie_fde entry[1]; |
430 | }; | |
431 | ||
432 | struct eh_frame_array_ent | |
433 | { | |
434 | bfd_vma initial_loc; | |
ae6c7e33 | 435 | bfd_size_type range; |
126495ed AM |
436 | bfd_vma fde; |
437 | }; | |
438 | ||
bce613b9 JJ |
439 | struct htab; |
440 | ||
2f0c68f2 CM |
441 | #define DWARF2_EH_HDR 1 |
442 | #define COMPACT_EH_HDR 2 | |
443 | ||
444 | /* Endian-neutral code indicating that a function cannot be unwound. */ | |
445 | #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01 | |
446 | ||
447 | struct dwarf_eh_frame_hdr_info | |
126495ed | 448 | { |
bce613b9 | 449 | struct htab *cies; |
2f0c68f2 | 450 | unsigned int fde_count; |
126495ed AM |
451 | /* TRUE if .eh_frame_hdr should contain the sorted search table. |
452 | We build it if we successfully read all .eh_frame input sections | |
453 | and recognize them. */ | |
b34976b6 | 454 | bfd_boolean table; |
2f0c68f2 CM |
455 | struct eh_frame_array_ent *array; |
456 | }; | |
457 | ||
458 | struct compact_eh_frame_hdr_info | |
459 | { | |
460 | unsigned int allocated_entries; | |
461 | /* eh_frame_entry fragments. */ | |
462 | asection **entries; | |
463 | }; | |
464 | ||
465 | struct eh_frame_hdr_info | |
466 | { | |
467 | asection *hdr_sec; | |
468 | unsigned int array_count; | |
469 | bfd_boolean frame_hdr_is_compact; | |
470 | union | |
471 | { | |
472 | struct dwarf_eh_frame_hdr_info dwarf; | |
473 | struct compact_eh_frame_hdr_info compact; | |
474 | } | |
475 | u; | |
126495ed AM |
476 | }; |
477 | ||
4dfe6ac6 NC |
478 | /* Enum used to identify target specific extensions to the elf_obj_tdata |
479 | and elf_link_hash_table structures. Note the enums deliberately start | |
480 | from 1 so that we can detect an uninitialized field. The generic value | |
481 | is last so that additions to this enum do not need to modify more than | |
482 | one line. */ | |
483 | enum elf_target_id | |
484 | { | |
a06ea964 NC |
485 | AARCH64_ELF_DATA = 1, |
486 | ALPHA_ELF_DATA, | |
8a36df4d | 487 | ARC_ELF_DATA, |
4dfe6ac6 NC |
488 | ARM_ELF_DATA, |
489 | AVR_ELF_DATA, | |
490 | BFIN_ELF_DATA, | |
491 | CRIS_ELF_DATA, | |
492 | FRV_ELF_DATA, | |
493 | HPPA32_ELF_DATA, | |
494 | HPPA64_ELF_DATA, | |
495 | I386_ELF_DATA, | |
496 | IA64_ELF_DATA, | |
497 | LM32_ELF_DATA, | |
498 | M32R_ELF_DATA, | |
499 | M68HC11_ELF_DATA, | |
500 | M68K_ELF_DATA, | |
a3c62988 | 501 | METAG_ELF_DATA, |
4dfe6ac6 NC |
502 | MICROBLAZE_ELF_DATA, |
503 | MIPS_ELF_DATA, | |
504 | MN10300_ELF_DATA, | |
35c08157 | 505 | NDS32_ELF_DATA, |
36591ba1 | 506 | NIOS2_ELF_DATA, |
73589c9d | 507 | OR1K_ELF_DATA, |
4dfe6ac6 NC |
508 | PPC32_ELF_DATA, |
509 | PPC64_ELF_DATA, | |
889294f6 | 510 | PRU_ELF_DATA, |
4dfe6ac6 NC |
511 | S390_ELF_DATA, |
512 | SH_ELF_DATA, | |
513 | SPARC_ELF_DATA, | |
514 | SPU_ELF_DATA, | |
41820509 | 515 | TIC6X_ELF_DATA, |
4dfe6ac6 NC |
516 | X86_64_ELF_DATA, |
517 | XTENSA_ELF_DATA, | |
f6c1a2d5 | 518 | XGATE_ELF_DATA, |
aa137e4d NC |
519 | TILEGX_ELF_DATA, |
520 | TILEPRO_ELF_DATA, | |
e23eba97 | 521 | RISCV_ELF_DATA, |
4dfe6ac6 NC |
522 | GENERIC_ELF_DATA |
523 | }; | |
524 | ||
ef10c3ac L |
525 | struct elf_sym_strtab |
526 | { | |
527 | Elf_Internal_Sym sym; | |
528 | unsigned long dest_index; | |
529 | unsigned long destshndx_index; | |
530 | }; | |
531 | ||
252b5132 RH |
532 | /* ELF linker hash table. */ |
533 | ||
534 | struct elf_link_hash_table | |
535 | { | |
536 | struct bfd_link_hash_table root; | |
51b64d56 | 537 | |
4dfe6ac6 NC |
538 | /* An identifier used to distinguish different target |
539 | specific extensions to this structure. */ | |
540 | enum elf_target_id hash_table_id; | |
541 | ||
252b5132 RH |
542 | /* Whether we have created the special dynamic sections required |
543 | when linking against or generating a shared object. */ | |
b34976b6 | 544 | bfd_boolean dynamic_sections_created; |
51b64d56 | 545 | |
7f923b7f AM |
546 | /* Whether dynamic relocations are present. */ |
547 | bfd_boolean dynamic_relocs; | |
548 | ||
74541ad4 AM |
549 | /* True if this target has relocatable executables, so needs dynamic |
550 | section symbols. */ | |
551 | bfd_boolean is_relocatable_executable; | |
552 | ||
252b5132 RH |
553 | /* The BFD used to hold special sections created by the linker. |
554 | This will be the first BFD found which requires these sections to | |
555 | be created. */ | |
556 | bfd *dynobj; | |
51b64d56 AM |
557 | |
558 | /* The value to use when initialising got.refcount/offset and | |
559 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when | |
a6aa5195 AM |
560 | the values are refcounts. Set to init_got_offset/init_plt_offset |
561 | in size_dynamic_sections when the values may be offsets. */ | |
562 | union gotplt_union init_got_refcount; | |
563 | union gotplt_union init_plt_refcount; | |
5cab59f6 AM |
564 | |
565 | /* The value to use for got.refcount/offset and plt.refcount/offset | |
566 | when the values may be offsets. Normally (bfd_vma) -1. */ | |
a6aa5195 AM |
567 | union gotplt_union init_got_offset; |
568 | union gotplt_union init_plt_offset; | |
51b64d56 | 569 | |
d5486c43 L |
570 | /* The number of symbols found in the link which is intended for the |
571 | mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */ | |
252b5132 | 572 | bfd_size_type dynsymcount; |
90ac2420 | 573 | bfd_size_type local_dynsymcount; |
51b64d56 | 574 | |
252b5132 RH |
575 | /* The string table of dynamic symbols, which becomes the .dynstr |
576 | section. */ | |
2b0f7ef9 | 577 | struct elf_strtab_hash *dynstr; |
51b64d56 | 578 | |
ef10c3ac L |
579 | /* The number of symbol strings found in the link which must be put |
580 | into the .strtab section. */ | |
581 | bfd_size_type strtabcount; | |
582 | ||
583 | /* The array size of the symbol string table, which becomes the | |
584 | .strtab section. */ | |
585 | bfd_size_type strtabsize; | |
586 | ||
587 | /* The array of strings, which becomes the .strtab section. */ | |
588 | struct elf_sym_strtab *strtab; | |
589 | ||
252b5132 RH |
590 | /* The number of buckets in the hash table in the .hash section. |
591 | This is based on the number of dynamic symbols. */ | |
592 | bfd_size_type bucketcount; | |
51b64d56 | 593 | |
252b5132 RH |
594 | /* A linked list of DT_NEEDED names found in dynamic objects |
595 | included in the link. */ | |
596 | struct bfd_link_needed_list *needed; | |
51b64d56 | 597 | |
74541ad4 AM |
598 | /* Sections in the output bfd that provides a section symbol |
599 | to be used by relocations emitted against local symbols. | |
600 | Most targets will not use data_index_section. */ | |
601 | asection *text_index_section; | |
602 | asection *data_index_section; | |
603 | ||
252b5132 RH |
604 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
605 | struct elf_link_hash_entry *hgot; | |
51b64d56 | 606 | |
7325306f RS |
607 | /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
608 | struct elf_link_hash_entry *hplt; | |
609 | ||
9637f6ef L |
610 | /* The _DYNAMIC symbol. */ |
611 | struct elf_link_hash_entry *hdynamic; | |
612 | ||
f5fa8ca2 | 613 | /* A pointer to information used to merge SEC_MERGE sections. */ |
c39a58e6 | 614 | void *merge_info; |
51b64d56 | 615 | |
3722b82f AM |
616 | /* Used to link stabs in sections. */ |
617 | struct stab_info stab_info; | |
618 | ||
126495ed AM |
619 | /* Used by eh_frame code when editing .eh_frame. */ |
620 | struct eh_frame_hdr_info eh_info; | |
621 | ||
30b30c21 RH |
622 | /* A linked list of local symbols to be added to .dynsym. */ |
623 | struct elf_link_local_dynamic_entry *dynlocal; | |
51b64d56 | 624 | |
a963dc6a L |
625 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
626 | objects included in the link. */ | |
627 | struct bfd_link_needed_list *runpath; | |
13ae64f3 | 628 | |
e1918d23 AM |
629 | /* Cached first output tls section and size of PT_TLS segment. */ |
630 | asection *tls_sec; | |
631 | bfd_size_type tls_size; | |
f5d44ba0 AM |
632 | |
633 | /* A linked list of BFD's loaded in the link. */ | |
634 | struct elf_link_loaded_list *loaded; | |
6de2ae4a L |
635 | |
636 | /* Short-cuts to get to dynamic linker sections. */ | |
637 | asection *sgot; | |
638 | asection *sgotplt; | |
639 | asection *srelgot; | |
640 | asection *splt; | |
641 | asection *srelplt; | |
9d19e4fd AM |
642 | asection *sdynbss; |
643 | asection *srelbss; | |
5474d94f AM |
644 | asection *sdynrelro; |
645 | asection *sreldynrelro; | |
6de2ae4a L |
646 | asection *igotplt; |
647 | asection *iplt; | |
648 | asection *irelplt; | |
649 | asection *irelifunc; | |
cae1fbbb | 650 | asection *dynsym; |
252b5132 RH |
651 | }; |
652 | ||
653 | /* Look up an entry in an ELF linker hash table. */ | |
654 | ||
655 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ | |
656 | ((struct elf_link_hash_entry *) \ | |
657 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ | |
658 | (copy), (follow))) | |
659 | ||
660 | /* Traverse an ELF linker hash table. */ | |
661 | ||
662 | #define elf_link_hash_traverse(table, func, info) \ | |
663 | (bfd_link_hash_traverse \ | |
664 | (&(table)->root, \ | |
c39a58e6 | 665 | (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
666 | (info))) |
667 | ||
668 | /* Get the ELF linker hash table from a link_info structure. */ | |
669 | ||
670 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) | |
8ea2e4bd | 671 | |
4dfe6ac6 NC |
672 | #define elf_hash_table_id(table) ((table) -> hash_table_id) |
673 | ||
b34976b6 | 674 | /* Returns TRUE if the hash table is a struct elf_link_hash_table. */ |
07d6d2b8 | 675 | #define is_elf_hash_table(htab) \ |
0eddce27 | 676 | (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table) |
ec338859 | 677 | |
87d72d41 AM |
678 | /* Used by bfd_sym_from_r_symndx to cache a small number of local |
679 | symbols. */ | |
ec338859 | 680 | #define LOCAL_SYM_CACHE_SIZE 32 |
87d72d41 | 681 | struct sym_cache |
ec338859 AM |
682 | { |
683 | bfd *abfd; | |
684 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; | |
87d72d41 | 685 | Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE]; |
ec338859 | 686 | }; |
252b5132 RH |
687 | \f |
688 | /* Constant information held for an ELF backend. */ | |
689 | ||
690 | struct elf_size_info { | |
691 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; | |
692 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; | |
693 | ||
c7ac6ff8 MM |
694 | /* The size of entries in the .hash section. */ |
695 | unsigned char sizeof_hash_entry; | |
696 | ||
697 | /* The number of internal relocations to allocate per external | |
698 | relocation entry. */ | |
699 | unsigned char int_rels_per_ext_rel; | |
947216bf AM |
700 | /* We use some fixed size arrays. This should be large enough to |
701 | handle all back-ends. */ | |
702 | #define MAX_INT_RELS_PER_EXT_REL 3 | |
c7ac6ff8 | 703 | |
45d6a902 | 704 | unsigned char arch_size, log_file_align; |
252b5132 | 705 | unsigned char elfclass, ev_current; |
dc810e39 | 706 | int (*write_out_phdrs) |
c39a58e6 AM |
707 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
708 | bfd_boolean | |
709 | (*write_shdrs_and_ehdr) (bfd *); | |
20a761b5 RM |
710 | bfd_boolean (*checksum_contents) |
711 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
dc810e39 | 712 | void (*write_relocs) |
c39a58e6 | 713 | (bfd *, asection *, void *); |
8384fb8f | 714 | bfd_boolean (*swap_symbol_in) |
c39a58e6 | 715 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
dc810e39 | 716 | void (*swap_symbol_out) |
c39a58e6 | 717 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
b34976b6 | 718 | bfd_boolean (*slurp_reloc_table) |
c39a58e6 | 719 | (bfd *, asection *, asymbol **, bfd_boolean); |
dc810e39 | 720 | long (*slurp_symbol_table) |
c39a58e6 | 721 | (bfd *, asymbol **, bfd_boolean); |
dc810e39 | 722 | void (*swap_dyn_in) |
c39a58e6 | 723 | (bfd *, const void *, Elf_Internal_Dyn *); |
dc810e39 | 724 | void (*swap_dyn_out) |
c39a58e6 | 725 | (bfd *, const Elf_Internal_Dyn *, void *); |
c7ac6ff8 | 726 | |
947216bf AM |
727 | /* This function is called to swap in a REL relocation. If an |
728 | external relocation corresponds to more than one internal | |
729 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 730 | void (*swap_reloc_in) |
c39a58e6 | 731 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 732 | |
947216bf | 733 | /* This function is called to swap out a REL relocation. */ |
c7ac6ff8 | 734 | void (*swap_reloc_out) |
c39a58e6 | 735 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
c7ac6ff8 | 736 | |
947216bf AM |
737 | /* This function is called to swap in a RELA relocation. If an |
738 | external relocation corresponds to more than one internal | |
739 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 740 | void (*swap_reloca_in) |
c39a58e6 | 741 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 742 | |
947216bf | 743 | /* This function is called to swap out a RELA relocation. */ |
c7ac6ff8 | 744 | void (*swap_reloca_out) |
c39a58e6 | 745 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 RH |
746 | }; |
747 | ||
748 | #define elf_symbol_from(ABFD,S) \ | |
0ee5a0e4 AM |
749 | (((S)->the_bfd != NULL \ |
750 | && (S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ | |
751 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ | |
752 | ? (elf_symbol_type *) (S) \ | |
753 | : 0) | |
252b5132 | 754 | |
db6751f2 JJ |
755 | enum elf_reloc_type_class { |
756 | reloc_class_normal, | |
757 | reloc_class_relative, | |
7e612e98 | 758 | reloc_class_copy, |
1997c994 AM |
759 | reloc_class_ifunc, |
760 | reloc_class_plt | |
db6751f2 JJ |
761 | }; |
762 | ||
73d074b4 DJ |
763 | struct elf_reloc_cookie |
764 | { | |
765 | Elf_Internal_Rela *rels, *rel, *relend; | |
6cdc0ccc | 766 | Elf_Internal_Sym *locsyms; |
73d074b4 DJ |
767 | bfd *abfd; |
768 | size_t locsymcount; | |
769 | size_t extsymoff; | |
770 | struct elf_link_hash_entry **sym_hashes; | |
140f6c8e | 771 | int r_sym_shift; |
b34976b6 | 772 | bfd_boolean bad_symtab; |
73d074b4 DJ |
773 | }; |
774 | ||
c6e90b02 TS |
775 | /* The level of IRIX compatibility we're striving for. */ |
776 | ||
777 | typedef enum { | |
778 | ict_none, | |
779 | ict_irix5, | |
780 | ict_irix6 | |
781 | } irix_compat_t; | |
782 | ||
2f89ff8d L |
783 | /* Mapping of ELF section names and types. */ |
784 | struct bfd_elf_special_section | |
785 | { | |
786 | const char *prefix; | |
9fb71ee4 | 787 | unsigned int prefix_length; |
7dcb9820 AM |
788 | /* 0 means name must match PREFIX exactly. |
789 | -1 means name must start with PREFIX followed by an arbitrary string. | |
790 | -2 means name must match PREFIX exactly or consist of PREFIX followed | |
791 | by a dot then anything. | |
792 | > 0 means name must start with the first PREFIX_LENGTH chars of | |
793 | PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */ | |
9fb71ee4 NC |
794 | signed int suffix_length; |
795 | unsigned int type; | |
01e1a5bc | 796 | bfd_vma attr; |
2f89ff8d L |
797 | }; |
798 | ||
8a696751 AM |
799 | enum action_discarded |
800 | { | |
801 | COMPLAIN = 1, | |
802 | PRETEND = 2 | |
803 | }; | |
804 | ||
6a5bb875 PB |
805 | typedef asection * (*elf_gc_mark_hook_fn) |
806 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
807 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
808 | ||
46bed679 L |
809 | enum elf_property_kind |
810 | { | |
811 | /* A new property. */ | |
812 | property_unknown = 0, | |
813 | /* A property ignored by backend. */ | |
814 | property_ignored, | |
815 | /* A corrupt property reported by backend. */ | |
816 | property_corrupt, | |
817 | /* A property should be removed due to property merge. */ | |
818 | property_remove, | |
819 | /* A property which is a number. */ | |
820 | property_number | |
821 | }; | |
822 | ||
823 | typedef struct elf_property | |
824 | { | |
825 | unsigned int pr_type; | |
826 | unsigned int pr_datasz; | |
827 | union | |
828 | { | |
829 | /* For property_number, this is a number. */ | |
830 | bfd_vma number; | |
831 | /* Add a new one if elf_property_kind is updated. */ | |
832 | } u; | |
833 | enum elf_property_kind pr_kind; | |
834 | } elf_property; | |
835 | ||
836 | typedef struct elf_property_list | |
837 | { | |
838 | struct elf_property_list *next; | |
839 | struct elf_property property; | |
840 | } elf_property_list; | |
841 | ||
9eaff861 AO |
842 | struct bfd_elf_section_reloc_data; |
843 | ||
252b5132 RH |
844 | struct elf_backend_data |
845 | { | |
252b5132 RH |
846 | /* The architecture for this backend. */ |
847 | enum bfd_architecture arch; | |
848 | ||
ae95ffa6 L |
849 | /* An identifier used to distinguish different target specific |
850 | extensions to elf_obj_tdata and elf_link_hash_table structures. */ | |
851 | enum elf_target_id target_id; | |
852 | ||
252b5132 RH |
853 | /* The ELF machine code (EM_xxxx) for this backend. */ |
854 | int elf_machine_code; | |
855 | ||
9eaff861 | 856 | /* EI_OSABI. */ |
d1036acb L |
857 | int elf_osabi; |
858 | ||
252b5132 RH |
859 | /* The maximum page size for this backend. */ |
860 | bfd_vma maxpagesize; | |
861 | ||
b1342370 DJ |
862 | /* The minimum page size for this backend. An input object will not be |
863 | considered page aligned unless its sections are correctly aligned for | |
864 | pages at least this large. May be smaller than maxpagesize. */ | |
865 | bfd_vma minpagesize; | |
866 | ||
24718e3b L |
867 | /* The common page size for this backend. */ |
868 | bfd_vma commonpagesize; | |
869 | ||
702d1671 AM |
870 | /* The value of commonpagesize to use when -z relro for this backend. */ |
871 | bfd_vma relropagesize; | |
872 | ||
e5a52504 MM |
873 | /* The BFD flags applied to sections created for dynamic linking. */ |
874 | flagword dynamic_sec_flags; | |
875 | ||
23209a78 RM |
876 | /* Architecture-specific data for this backend. |
877 | This is actually a pointer to some type like struct elf_ARCH_data. */ | |
878 | const void *arch_data; | |
879 | ||
252b5132 | 880 | /* A function to translate an ELF RELA relocation to a BFD arelent |
f3185997 NC |
881 | structure. Returns TRUE upon success, FALSE otherwise. */ |
882 | bfd_boolean (*elf_info_to_howto) | |
c39a58e6 | 883 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
884 | |
885 | /* A function to translate an ELF REL relocation to a BFD arelent | |
f3185997 NC |
886 | structure. Returns TRUE upon success, FALSE otherwise. */ |
887 | bfd_boolean (*elf_info_to_howto_rel) | |
c39a58e6 | 888 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
889 | |
890 | /* A function to determine whether a symbol is global when | |
891 | partitioning the symbol table into local and global symbols. | |
892 | This should be NULL for most targets, in which case the correct | |
893 | thing will be done. MIPS ELF, at least on the Irix 5, has | |
894 | special requirements. */ | |
b34976b6 | 895 | bfd_boolean (*elf_backend_sym_is_global) |
c39a58e6 | 896 | (bfd *, asymbol *); |
252b5132 RH |
897 | |
898 | /* The remaining functions are hooks which are called only if they | |
899 | are not NULL. */ | |
900 | ||
901 | /* A function to permit a backend specific check on whether a | |
902 | particular BFD format is relevant for an object file, and to | |
903 | permit the backend to set any global information it wishes. When | |
904 | this is called elf_elfheader is set, but anything else should be | |
b34976b6 | 905 | used with caution. If this returns FALSE, the check_format |
252b5132 | 906 | routine will return a bfd_error_wrong_format error. */ |
b34976b6 | 907 | bfd_boolean (*elf_backend_object_p) |
c39a58e6 | 908 | (bfd *); |
252b5132 RH |
909 | |
910 | /* A function to do additional symbol processing when reading the | |
911 | ELF symbol table. This is where any processor-specific special | |
912 | section indices are handled. */ | |
dc810e39 | 913 | void (*elf_backend_symbol_processing) |
c39a58e6 | 914 | (bfd *, asymbol *); |
252b5132 RH |
915 | |
916 | /* A function to do additional symbol processing after reading the | |
917 | entire ELF symbol table. */ | |
b34976b6 | 918 | bfd_boolean (*elf_backend_symbol_table_processing) |
c39a58e6 | 919 | (bfd *, elf_symbol_type *, unsigned int); |
252b5132 | 920 | |
8387904d | 921 | /* A function to set the type of the info field. Processor-specific |
3e932841 | 922 | types should be handled here. */ |
dc810e39 | 923 | int (*elf_backend_get_symbol_type) |
c39a58e6 | 924 | (Elf_Internal_Sym *, int); |
60bcf0fa | 925 | |
8387904d AM |
926 | /* A function to return the linker hash table entry of a symbol that |
927 | might be satisfied by an archive symbol. */ | |
928 | struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup) | |
929 | (bfd *, struct bfd_link_info *, const char *); | |
930 | ||
174fd7f9 RS |
931 | /* Return true if local section symbols should have a non-null st_name. |
932 | NULL implies false. */ | |
933 | bfd_boolean (*elf_backend_name_local_section_symbols) | |
934 | (bfd *); | |
935 | ||
252b5132 RH |
936 | /* A function to do additional processing on the ELF section header |
937 | just before writing it out. This is used to set the flags and | |
938 | type fields for some sections, or to actually write out data for | |
939 | unusual sections. */ | |
b34976b6 | 940 | bfd_boolean (*elf_backend_section_processing) |
c39a58e6 | 941 | (bfd *, Elf_Internal_Shdr *); |
252b5132 RH |
942 | |
943 | /* A function to handle unusual section types when creating BFD | |
944 | sections from ELF sections. */ | |
b34976b6 | 945 | bfd_boolean (*elf_backend_section_from_shdr) |
6dc132d9 | 946 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
252b5132 | 947 | |
551b43fd | 948 | /* A function to convert machine dependent ELF section header flags to |
fa152c49 | 949 | BFD internal section header flags. */ |
b34976b6 | 950 | bfd_boolean (*elf_backend_section_flags) |
1829f4b2 | 951 | (flagword *, const Elf_Internal_Shdr *); |
fa152c49 | 952 | |
551b43fd AM |
953 | /* A function that returns a struct containing ELF section flags and |
954 | type for the given BFD section. */ | |
955 | const struct bfd_elf_special_section * (*get_sec_type_attr) | |
956 | (bfd *, asection *); | |
957 | ||
20cfcaae | 958 | /* A function to handle unusual program segment types when creating BFD |
3e932841 | 959 | sections from ELF program segments. */ |
b34976b6 | 960 | bfd_boolean (*elf_backend_section_from_phdr) |
d27f5fa1 | 961 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
20cfcaae | 962 | |
252b5132 RH |
963 | /* A function to set up the ELF section header for a BFD section in |
964 | preparation for writing it out. This is where the flags and type | |
965 | fields are set for unusual sections. */ | |
b34976b6 | 966 | bfd_boolean (*elf_backend_fake_sections) |
c39a58e6 | 967 | (bfd *, Elf_Internal_Shdr *, asection *); |
252b5132 RH |
968 | |
969 | /* A function to get the ELF section index for a BFD section. If | |
b34976b6 | 970 | this returns TRUE, the section was found. If it is a normal ELF |
252b5132 RH |
971 | section, *RETVAL should be left unchanged. If it is not a normal |
972 | ELF section *RETVAL should be set to the SHN_xxxx index. */ | |
b34976b6 | 973 | bfd_boolean (*elf_backend_section_from_bfd_section) |
c39a58e6 | 974 | (bfd *, asection *, int *retval); |
252b5132 RH |
975 | |
976 | /* If this field is not NULL, it is called by the add_symbols phase | |
977 | of a link just before adding a symbol to the global linker hash | |
978 | table. It may modify any of the fields as it wishes. If *NAME | |
979 | is set to NULL, the symbol will be skipped rather than being | |
980 | added to the hash table. This function is responsible for | |
981 | handling all processor dependent symbol bindings and section | |
982 | indices, and must set at least *FLAGS and *SEC for each processor | |
983 | dependent case; failure to do so will cause a link error. */ | |
b34976b6 | 984 | bfd_boolean (*elf_add_symbol_hook) |
555cd476 | 985 | (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *, |
c39a58e6 | 986 | const char **name, flagword *flags, asection **sec, bfd_vma *value); |
252b5132 RH |
987 | |
988 | /* If this field is not NULL, it is called by the elf_link_output_sym | |
6e0b88f1 AM |
989 | phase of a link for each symbol which will appear in the object file. |
990 | On error, this function returns 0. 1 is returned when the symbol | |
991 | should be output, 2 is returned when the symbol should be discarded. */ | |
992 | int (*elf_backend_link_output_symbol_hook) | |
754021d0 AM |
993 | (struct bfd_link_info *info, const char *, Elf_Internal_Sym *, |
994 | asection *, struct elf_link_hash_entry *); | |
252b5132 RH |
995 | |
996 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend | |
997 | linker the first time it encounters a dynamic object in the link. | |
998 | This function must create any sections required for dynamic | |
999 | linking. The ABFD argument is a dynamic object. The .interp, | |
1000 | .dynamic, .dynsym, .dynstr, and .hash functions have already been | |
1001 | created, and this function may modify the section flags if | |
1002 | desired. This function will normally create the .got and .plt | |
1003 | sections, but different backends have different requirements. */ | |
b34976b6 | 1004 | bfd_boolean (*elf_backend_create_dynamic_sections) |
c39a58e6 | 1005 | (bfd *abfd, struct bfd_link_info *info); |
252b5132 | 1006 | |
aee6f5b4 AO |
1007 | /* When creating a shared library, determine whether to omit the |
1008 | dynamic symbol for the section. */ | |
1009 | bfd_boolean (*elf_backend_omit_section_dynsym) | |
1010 | (bfd *output_bfd, struct bfd_link_info *info, asection *osec); | |
1011 | ||
13285a1b AM |
1012 | /* Return TRUE if relocations of targets are compatible to the extent |
1013 | that CHECK_RELOCS will properly process them. PR 4424. */ | |
1014 | bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *); | |
1015 | ||
252b5132 RH |
1016 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
1017 | the ELF backend linker. It is called once for each section with | |
1018 | relocs of an object file, just after the symbols for the object | |
1019 | file have been added to the global linker hash table. The | |
1020 | function must look through the relocs and do any special handling | |
1021 | required. This generally means allocating space in the global | |
1022 | offset table, and perhaps allocating space for a reloc. The | |
1023 | relocs are always passed as Rela structures; if the section | |
1024 | actually uses Rel structures, the r_addend field will always be | |
1025 | zero. */ | |
b34976b6 | 1026 | bfd_boolean (*check_relocs) |
c39a58e6 AM |
1027 | (bfd *abfd, struct bfd_link_info *info, asection *o, |
1028 | const Elf_Internal_Rela *relocs); | |
252b5132 | 1029 | |
85fbca6a NC |
1030 | /* The CHECK_DIRECTIVES function is called once per input file by |
1031 | the add_symbols phase of the ELF backend linker. The function | |
1032 | must inspect the bfd and create any additional symbols according | |
1033 | to any custom directives in the bfd. */ | |
1034 | bfd_boolean (*check_directives) | |
1035 | (bfd *abfd, struct bfd_link_info *info); | |
1036 | ||
e5034e59 AM |
1037 | /* The NOTICE_AS_NEEDED function is called as the linker is about to |
1038 | handle an as-needed lib (ACT = notice_as_needed), and after the | |
1039 | linker has decided to keep the lib (ACT = notice_needed) or when | |
1040 | the lib is not needed (ACT = notice_not_needed). */ | |
1041 | bfd_boolean (*notice_as_needed) | |
1042 | (bfd *abfd, struct bfd_link_info *info, enum notice_asneeded_action act); | |
97fed1c9 | 1043 | |
252b5132 RH |
1044 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
1045 | linker for every symbol which is defined by a dynamic object and | |
1046 | referenced by a regular object. This is called after all the | |
1047 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS | |
1048 | function has been called. The hash table entry should be | |
1049 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be | |
1050 | defined in a section from a dynamic object. Dynamic object | |
1051 | sections are not included in the final link, and this function is | |
1052 | responsible for changing the value to something which the rest of | |
1053 | the link can deal with. This will normally involve adding an | |
1054 | entry to the .plt or .got or some such section, and setting the | |
1055 | symbol to point to that. */ | |
b34976b6 | 1056 | bfd_boolean (*elf_backend_adjust_dynamic_symbol) |
c39a58e6 | 1057 | (struct bfd_link_info *info, struct elf_link_hash_entry *h); |
252b5132 RH |
1058 | |
1059 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker | |
1060 | after all the linker input files have been seen but before the | |
1061 | section sizes have been set. This is called after | |
1062 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ | |
b34976b6 | 1063 | bfd_boolean (*elf_backend_always_size_sections) |
c39a58e6 | 1064 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
1065 | |
1066 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend | |
1067 | linker after all the linker input files have been seen but before | |
1068 | the sections sizes have been set. This is called after | |
1069 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. | |
1070 | It is only called when linking against a dynamic object. It must | |
1071 | set the sizes of the dynamic sections, and may fill in their | |
1072 | contents as well. The generic ELF linker can handle the .dynsym, | |
1073 | .dynstr and .hash sections. This function must handle the | |
1074 | .interp section and any sections created by the | |
1075 | CREATE_DYNAMIC_SECTIONS entry point. */ | |
b34976b6 | 1076 | bfd_boolean (*elf_backend_size_dynamic_sections) |
c39a58e6 | 1077 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 | 1078 | |
74541ad4 AM |
1079 | /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections |
1080 | we keep to use as a base for relocs and symbols. */ | |
1081 | void (*elf_backend_init_index_section) | |
1082 | (bfd *output_bfd, struct bfd_link_info *info); | |
1083 | ||
252b5132 RH |
1084 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
1085 | to handle the relocations for a section. | |
1086 | ||
1087 | The relocs are always passed as Rela structures; if the section | |
1088 | actually uses Rel structures, the r_addend field will always be | |
1089 | zero. | |
1090 | ||
1091 | This function is responsible for adjust the section contents as | |
1092 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 1093 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
1094 | necessary. |
1095 | ||
1096 | This function does not have to worry about setting the reloc | |
1097 | address or the reloc symbol index. | |
1098 | ||
1099 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
1100 | ||
1101 | LOCAL_SECTIONS is an array giving the section in the input file | |
1102 | corresponding to the st_shndx field of each local symbol. | |
1103 | ||
1104 | The global hash table entry for the global symbols can be found | |
1105 | via elf_sym_hashes (input_bfd). | |
1106 | ||
1049f94e | 1107 | When generating relocatable output, this function must handle |
252b5132 RH |
1108 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
1109 | going to be the section symbol corresponding to the output | |
1110 | section, which means that the addend must be adjusted | |
ece5ef60 AM |
1111 | accordingly. |
1112 | ||
1113 | Returns FALSE on error, TRUE on success, 2 if successful and | |
1114 | relocations should be written for this section. */ | |
1115 | int (*elf_backend_relocate_section) | |
c39a58e6 AM |
1116 | (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, |
1117 | asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, | |
1118 | Elf_Internal_Sym *local_syms, asection **local_sections); | |
252b5132 RH |
1119 | |
1120 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend | |
1121 | linker just before it writes a symbol out to the .dynsym section. | |
1122 | The processor backend may make any required adjustment to the | |
1123 | symbol. It may also take the opportunity to set contents of the | |
1124 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on | |
1125 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called | |
1126 | on those symbols which are defined by a dynamic object. */ | |
b34976b6 | 1127 | bfd_boolean (*elf_backend_finish_dynamic_symbol) |
c39a58e6 AM |
1128 | (bfd *output_bfd, struct bfd_link_info *info, |
1129 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym); | |
252b5132 RH |
1130 | |
1131 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend | |
1132 | linker just before it writes all the dynamic sections out to the | |
1133 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on | |
1134 | all dynamic symbols. */ | |
b34976b6 | 1135 | bfd_boolean (*elf_backend_finish_dynamic_sections) |
c39a58e6 | 1136 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
1137 | |
1138 | /* A function to do any beginning processing needed for the ELF file | |
1139 | before building the ELF headers and computing file positions. */ | |
1140 | void (*elf_backend_begin_write_processing) | |
c39a58e6 | 1141 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1142 | |
1143 | /* A function to do any final processing needed for the ELF file | |
b34976b6 | 1144 | before writing it out. The LINKER argument is TRUE if this BFD |
252b5132 RH |
1145 | was created by the ELF backend linker. */ |
1146 | void (*elf_backend_final_write_processing) | |
c39a58e6 | 1147 | (bfd *, bfd_boolean linker); |
252b5132 RH |
1148 | |
1149 | /* This function is called by get_program_header_size. It should | |
1150 | return the number of additional program segments which this BFD | |
1151 | will need. It should return -1 on error. */ | |
dc810e39 | 1152 | int (*elf_backend_additional_program_headers) |
a6b96beb | 1153 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1154 | |
1155 | /* This function is called to modify an existing segment map in a | |
1156 | backend specific fashion. */ | |
b34976b6 | 1157 | bfd_boolean (*elf_backend_modify_segment_map) |
c84fca4d | 1158 | (bfd *, struct bfd_link_info *); |
252b5132 | 1159 | |
e36284ab AM |
1160 | /* This function is called to modify program headers just before |
1161 | they are written. */ | |
1162 | bfd_boolean (*elf_backend_modify_program_headers) | |
1163 | (bfd *, struct bfd_link_info *); | |
1164 | ||
1a9ccd70 NC |
1165 | /* This function is called to see if the PHDR header should be |
1166 | checked for validity. */ | |
1167 | bfd_boolean (*elf_backend_allow_non_load_phdr) | |
1168 | (bfd *, const Elf_Internal_Phdr *, unsigned); | |
1169 | ||
74f0fb50 AM |
1170 | /* This function is called before section garbage collection to |
1171 | mark entry symbol sections. */ | |
1172 | void (*gc_keep) | |
1173 | (struct bfd_link_info *); | |
1174 | ||
64d03ab5 AM |
1175 | /* This function is called during section garbage collection to |
1176 | mark sections that define global symbols. */ | |
1177 | bfd_boolean (*gc_mark_dynamic_ref) | |
74f0fb50 | 1178 | (struct elf_link_hash_entry *, void *); |
64d03ab5 | 1179 | |
252b5132 | 1180 | /* This function is called during section gc to discover the section a |
1e2f5b6e | 1181 | particular relocation refers to. */ |
6a5bb875 PB |
1182 | elf_gc_mark_hook_fn gc_mark_hook; |
1183 | ||
1184 | /* This function, if defined, is called after the first gc marking pass | |
1185 | to allow the backend to mark additional sections. */ | |
1186 | bfd_boolean (*gc_mark_extra_sections) | |
74f0fb50 | 1187 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
252b5132 | 1188 | |
e6c51ed4 NC |
1189 | /* This function, if defined, is called after the ELF headers have |
1190 | been created. This allows for things like the OS and ABI versions | |
1191 | to be changed. */ | |
1192 | void (*elf_backend_post_process_headers) | |
c39a58e6 | 1193 | (bfd *, struct bfd_link_info *); |
e6c51ed4 | 1194 | |
587ff49e RH |
1195 | /* This function, if defined, prints a symbol to file and returns the |
1196 | name of the symbol to be printed. It should return NULL to fall | |
1197 | back to default symbol printing. */ | |
1198 | const char *(*elf_backend_print_symbol_all) | |
c39a58e6 | 1199 | (bfd *, void *, asymbol *); |
587ff49e RH |
1200 | |
1201 | /* This function, if defined, is called after all local symbols and | |
4cc11e76 | 1202 | global symbols converted to locals are emitted into the symtab |
4e617b1e | 1203 | section. It allows the backend to emit special local symbols |
587ff49e | 1204 | not handled in the hash table. */ |
4e617b1e PB |
1205 | bfd_boolean (*elf_backend_output_arch_local_syms) |
1206 | (bfd *, struct bfd_link_info *, void *, | |
1207 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, | |
1208 | struct elf_link_hash_entry *)); | |
1209 | ||
1210 | /* This function, if defined, is called after all symbols are emitted | |
1211 | into the symtab section. It allows the backend to emit special | |
1212 | global symbols not handled in the hash table. */ | |
b34976b6 | 1213 | bfd_boolean (*elf_backend_output_arch_syms) |
c39a58e6 | 1214 | (bfd *, struct bfd_link_info *, void *, |
754021d0 AM |
1215 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
1216 | struct elf_link_hash_entry *)); | |
587ff49e | 1217 | |
76359541 TP |
1218 | /* Filter what symbols of the output file to include in the import |
1219 | library if one is created. */ | |
1220 | unsigned int (*elf_backend_filter_implib_symbols) | |
1221 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
1222 | ||
d4c88bbb | 1223 | /* Copy any information related to dynamic linking from a pre-existing |
0a991dfe AM |
1224 | symbol to a newly created symbol. Also called to copy flags and |
1225 | other back-end info to a weakdef, in which case the symbol is not | |
1226 | newly created and plt/got refcounts and dynamic indices should not | |
1227 | be copied. */ | |
c61b8717 | 1228 | void (*elf_backend_copy_indirect_symbol) |
fcfa13d2 | 1229 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 1230 | struct elf_link_hash_entry *); |
c61b8717 RH |
1231 | |
1232 | /* Modify any information related to dynamic linking such that the | |
1233 | symbol is not exported. */ | |
1234 | void (*elf_backend_hide_symbol) | |
c39a58e6 | 1235 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
c61b8717 | 1236 | |
508c3946 L |
1237 | /* A function to do additional symbol fixup, called by |
1238 | _bfd_elf_fix_symbol_flags. */ | |
1239 | bfd_boolean (*elf_backend_fixup_symbol) | |
1240 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
1241 | ||
9bf7216d KK |
1242 | /* Merge the backend specific symbol attribute. */ |
1243 | void (*elf_backend_merge_symbol_attribute) | |
1244 | (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, | |
1245 | bfd_boolean); | |
1246 | ||
ad9563d6 CM |
1247 | /* This function, if defined, will return a string containing the |
1248 | name of a target-specific dynamic tag. */ | |
1249 | char *(*elf_backend_get_target_dtag) | |
1250 | (bfd_vma); | |
1251 | ||
12ac1cf5 NC |
1252 | /* Decide whether an undefined symbol is special and can be ignored. |
1253 | This is the case for OPTIONAL symbols on IRIX. */ | |
1254 | bfd_boolean (*elf_backend_ignore_undef_symbol) | |
1255 | (struct elf_link_hash_entry *); | |
1256 | ||
9317eacc CM |
1257 | /* Emit relocations. Overrides default routine for emitting relocs, |
1258 | except during a relocatable link, or if all relocs are being emitted. */ | |
b34976b6 | 1259 | bfd_boolean (*elf_backend_emit_relocs) |
eac338cf PB |
1260 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
1261 | struct elf_link_hash_entry **); | |
9317eacc | 1262 | |
9eaff861 AO |
1263 | /* Update relocations. It is allowed to change the number and the order. |
1264 | In such a case hashes should be invalidated. */ | |
1265 | void (*elf_backend_update_relocs) | |
1266 | (asection *, struct bfd_elf_section_reloc_data *); | |
1267 | ||
9317eacc CM |
1268 | /* Count relocations. Not called for relocatable links |
1269 | or if all relocs are being preserved in the output. */ | |
1270 | unsigned int (*elf_backend_count_relocs) | |
58217f29 | 1271 | (struct bfd_link_info *, asection *); |
9317eacc | 1272 | |
491d01d3 YU |
1273 | /* Count additionals relocations. Called for relocatable links if |
1274 | additional relocations needs to be created. */ | |
1275 | unsigned int (*elf_backend_count_additional_relocs) | |
1276 | (asection *); | |
1277 | ||
28dbcedc AM |
1278 | /* Say whether to sort relocs output by ld -r and ld --emit-relocs, |
1279 | by r_offset. If NULL, default to true. */ | |
1280 | bfd_boolean (*sort_relocs_p) | |
1281 | (asection *); | |
1282 | ||
bb0082d6 | 1283 | /* This function, if defined, is called when an NT_PRSTATUS note is found |
183e98be | 1284 | in a core file. */ |
b34976b6 | 1285 | bfd_boolean (*elf_backend_grok_prstatus) |
c39a58e6 | 1286 | (bfd *, Elf_Internal_Note *); |
bb0082d6 AM |
1287 | |
1288 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO | |
183e98be | 1289 | note is found in a core file. */ |
b34976b6 | 1290 | bfd_boolean (*elf_backend_grok_psinfo) |
c39a58e6 | 1291 | (bfd *, Elf_Internal_Note *); |
bb0082d6 | 1292 | |
544c67cd JB |
1293 | /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS |
1294 | note is found in a core file. */ | |
1295 | bfd_boolean (*elf_backend_grok_freebsd_prstatus) | |
1296 | (bfd *, Elf_Internal_Note *); | |
1297 | ||
183e98be AM |
1298 | /* This function, if defined, is called to write a note to a corefile. */ |
1299 | char *(*elf_backend_write_core_note) | |
1300 | (bfd *abfd, char *buf, int *bufsiz, int note_type, ...); | |
1301 | ||
ae17ab41 CM |
1302 | /* This function, if defined, is called to convert target-specific |
1303 | section flag names into hex values. */ | |
1304 | flagword (*elf_backend_lookup_section_flags_hook) | |
1305 | (char *); | |
1306 | ||
db6751f2 | 1307 | /* This function returns class of a reloc type. */ |
f51e552e | 1308 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
7e612e98 | 1309 | (const struct bfd_link_info *, const asection *, const Elf_Internal_Rela *); |
db6751f2 | 1310 | |
73d074b4 DJ |
1311 | /* This function, if defined, removes information about discarded functions |
1312 | from other sections which mention them. */ | |
b34976b6 | 1313 | bfd_boolean (*elf_backend_discard_info) |
c39a58e6 | 1314 | (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
73d074b4 DJ |
1315 | |
1316 | /* This function, if defined, signals that the function above has removed | |
1317 | the discarded relocations for this section. */ | |
b34976b6 | 1318 | bfd_boolean (*elf_backend_ignore_discarded_relocs) |
c39a58e6 | 1319 | (asection *); |
73d074b4 | 1320 | |
8a696751 AM |
1321 | /* What to do when ld finds relocations against symbols defined in |
1322 | discarded sections. */ | |
1323 | unsigned int (*action_discarded) | |
1324 | (asection *); | |
1325 | ||
8c946ed5 RS |
1326 | /* This function returns the width of FDE pointers in bytes, or 0 if |
1327 | that can't be determined for some reason. The default definition | |
1328 | goes by the bfd's EI_CLASS. */ | |
1329 | unsigned int (*elf_backend_eh_frame_address_size) | |
76c20d54 | 1330 | (bfd *, const asection *); |
8c946ed5 | 1331 | |
ec3391e7 AO |
1332 | /* These functions tell elf-eh-frame whether to attempt to turn |
1333 | absolute or lsda encodings into pc-relative ones. The default | |
1334 | definition enables these transformations. */ | |
1335 | bfd_boolean (*elf_backend_can_make_relative_eh_frame) | |
1336 | (bfd *, struct bfd_link_info *, asection *); | |
1337 | bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame) | |
1338 | (bfd *, struct bfd_link_info *, asection *); | |
1339 | ||
1340 | /* This function returns an encoding after computing the encoded | |
1341 | value (and storing it in ENCODED) for the given OFFSET into OSEC, | |
1342 | to be stored in at LOC_OFFSET into the LOC_SEC input section. | |
1343 | The default definition chooses a 32-bit PC-relative encoding. */ | |
1344 | bfd_byte (*elf_backend_encode_eh_address) | |
1345 | (bfd *abfd, struct bfd_link_info *info, | |
1346 | asection *osec, bfd_vma offset, | |
1347 | asection *loc_sec, bfd_vma loc_offset, | |
1348 | bfd_vma *encoded); | |
1349 | ||
73d074b4 | 1350 | /* This function, if defined, may write out the given section. |
b34976b6 AM |
1351 | Returns TRUE if it did so and FALSE if the caller should. */ |
1352 | bfd_boolean (*elf_backend_write_section) | |
c7b8f16e | 1353 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
73d074b4 | 1354 | |
c6e90b02 TS |
1355 | /* The level of IRIX compatibility we're striving for. |
1356 | MIPS ELF specific function. */ | |
1357 | irix_compat_t (*elf_backend_mips_irix_compat) | |
c39a58e6 | 1358 | (bfd *); |
c6e90b02 TS |
1359 | |
1360 | reloc_howto_type *(*elf_backend_mips_rtype_to_howto) | |
0aa13fee | 1361 | (bfd *, unsigned int, bfd_boolean); |
c6e90b02 | 1362 | |
252b5132 RH |
1363 | /* The swapping table to use when dealing with ECOFF information. |
1364 | Used for the MIPS ELF .mdebug section. */ | |
1365 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; | |
1366 | ||
8d6337fe RM |
1367 | /* This function implements `bfd_elf_bfd_from_remote_memory'; |
1368 | see elf.c, elfcode.h. */ | |
1369 | bfd *(*elf_backend_bfd_from_remote_memory) | |
f0a5d95a | 1370 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
5979d6b6 AM |
1371 | int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, |
1372 | bfd_size_type len)); | |
8d6337fe | 1373 | |
4c45e5c9 JJ |
1374 | /* This function is used by `_bfd_elf_get_synthetic_symtab'; |
1375 | see elf.c. */ | |
1376 | bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *); | |
1377 | ||
a4d8e49b L |
1378 | /* Is symbol defined in common section? */ |
1379 | bfd_boolean (*common_definition) (Elf_Internal_Sym *); | |
1380 | ||
1381 | /* Return a common section index for section. */ | |
1382 | unsigned int (*common_section_index) (asection *); | |
1383 | ||
1384 | /* Return a common section for section. */ | |
1385 | asection *(*common_section) (asection *); | |
1386 | ||
1387 | /* Return TRUE if we can merge 2 definitions. */ | |
5d13b3b3 AM |
1388 | bfd_boolean (*merge_symbol) (struct elf_link_hash_entry *, |
1389 | const Elf_Internal_Sym *, asection **, | |
1390 | bfd_boolean, bfd_boolean, | |
1391 | bfd *, const asection *); | |
a4d8e49b | 1392 | |
fdc90cb4 JJ |
1393 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
1394 | bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *); | |
1395 | ||
fcb93ecf PB |
1396 | /* Return TRUE if type is a function symbol type. */ |
1397 | bfd_boolean (*is_function_type) (unsigned int type); | |
1398 | ||
aef36ac1 AM |
1399 | /* If the ELF symbol SYM might be a function in SEC, return the |
1400 | function size and set *CODE_OFF to the function's entry point, | |
1401 | otherwise return zero. */ | |
1402 | bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec, | |
1403 | bfd_vma *code_off); | |
9f296da3 | 1404 | |
bce964aa AM |
1405 | /* Given NAME, the name of a relocation section stripped of its |
1406 | .rel/.rela prefix, return the section in ABFD to which the | |
1407 | relocations apply. */ | |
1408 | asection *(*get_reloc_section) (bfd *abfd, const char *name); | |
bd53a53a | 1409 | |
5522f910 NC |
1410 | /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which |
1411 | has a type >= SHT_LOOS. Returns TRUE if the fields were initialised, | |
1412 | FALSE otherwise. Can be called multiple times for a given section, | |
1413 | until it returns TRUE. Most of the times it is called ISECTION will be | |
1414 | set to an input section that might be associated with the output section. | |
1415 | The last time that it is called, ISECTION will be set to NULL. */ | |
1416 | bfd_boolean (*elf_backend_copy_special_section_fields) | |
1417 | (const bfd *ibfd, bfd *obfd, const Elf_Internal_Shdr *isection, | |
1418 | Elf_Internal_Shdr *osection); | |
07d6d2b8 | 1419 | |
185d09ad | 1420 | /* Used to handle bad SHF_LINK_ORDER input. */ |
52d45da3 | 1421 | void (*link_order_error_handler) (const char *, ...); |
185d09ad | 1422 | |
4c45e5c9 JJ |
1423 | /* Name of the PLT relocation section. */ |
1424 | const char *relplt_name; | |
1425 | ||
252b5132 RH |
1426 | /* Alternate EM_xxxx machine codes for this backend. */ |
1427 | int elf_machine_alt1; | |
1428 | int elf_machine_alt2; | |
1429 | ||
1430 | const struct elf_size_info *s; | |
1431 | ||
29ef7005 L |
1432 | /* An array of target specific special sections. */ |
1433 | const struct bfd_elf_special_section *special_sections; | |
1434 | ||
6f2f2c9d DJ |
1435 | /* The size in bytes of the header for the GOT. This includes the |
1436 | so-called reserved entries on some systems. */ | |
252b5132 | 1437 | bfd_vma got_header_size; |
252b5132 | 1438 | |
10455f89 HPN |
1439 | /* The size of the GOT entry for the symbol pointed to by H if non-NULL, |
1440 | otherwise by the local symbol with index SYMNDX in IBFD. */ | |
1441 | bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *, | |
1442 | struct elf_link_hash_entry *h, | |
1443 | bfd *ibfd, unsigned long symndx); | |
1444 | ||
104d59d1 JM |
1445 | /* The vendor name to use for a processor-standard attributes section. */ |
1446 | const char *obj_attrs_vendor; | |
1447 | ||
1448 | /* The section name to use for a processor-standard attributes section. */ | |
1449 | const char *obj_attrs_section; | |
1450 | ||
1451 | /* Return 1, 2 or 3 to indicate what type of arguments a | |
1452 | processor-specific tag takes. */ | |
1453 | int (*obj_attrs_arg_type) (int); | |
1454 | ||
1455 | /* The section type to use for an attributes section. */ | |
1456 | unsigned int obj_attrs_section_type; | |
1457 | ||
3de4a297 JM |
1458 | /* This function determines the order in which any attributes are |
1459 | written. It must be defined for input in the range | |
1460 | LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range | |
1461 | is used in order to make unity easy). The returned value is the | |
1462 | actual tag number to place in the input position. */ | |
5aa6ff7c AS |
1463 | int (*obj_attrs_order) (int); |
1464 | ||
e8b36cd1 JM |
1465 | /* Handle merging unknown attributes; either warn and return TRUE, |
1466 | or give an error and return FALSE. */ | |
1467 | bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int); | |
1468 | ||
46bed679 L |
1469 | /* Parse GNU properties. Return the property kind. If the property |
1470 | is corrupt, issue an error message and return property_corrupt. */ | |
1471 | enum elf_property_kind (*parse_gnu_properties) (bfd *, unsigned int, | |
1472 | bfd_byte *, | |
1473 | unsigned int); | |
1474 | ||
1475 | /* Merge GNU properties. Return TRUE if property is updated. */ | |
5c3ce2bc L |
1476 | bfd_boolean (*merge_gnu_properties) (struct bfd_link_info *, bfd *, |
1477 | elf_property *, elf_property *); | |
46bed679 L |
1478 | |
1479 | /* Set up GNU properties. */ | |
fba37edd | 1480 | bfd *(*setup_gnu_properties) (struct bfd_link_info *); |
46bed679 | 1481 | |
2f0c68f2 CM |
1482 | /* Encoding used for compact EH tables. */ |
1483 | int (*compact_eh_encoding) (struct bfd_link_info *); | |
1484 | ||
1485 | /* Opcode representing no unwind. */ | |
1486 | int (*cant_unwind_opcode) (struct bfd_link_info *); | |
1487 | ||
7dc98aea RO |
1488 | /* This is non-zero if static TLS segments require a special alignment. */ |
1489 | unsigned static_tls_alignment; | |
1490 | ||
9eaff861 | 1491 | /* Alignment for the PT_GNU_STACK segment. */ |
04c3a755 NS |
1492 | unsigned stack_align; |
1493 | ||
84865015 NC |
1494 | /* Flag bits to assign to a section of type SHT_STRTAB. */ |
1495 | unsigned long elf_strtab_flags; | |
1496 | ||
b34976b6 AM |
1497 | /* This is TRUE if the linker should act like collect and gather |
1498 | global constructors and destructors by name. This is TRUE for | |
86dc0f79 RH |
1499 | MIPS ELF because the Irix 5 tools can not handle the .init |
1500 | section. */ | |
1501 | unsigned collect : 1; | |
1502 | ||
b34976b6 AM |
1503 | /* This is TRUE if the linker should ignore changes to the type of a |
1504 | symbol. This is TRUE for MIPS ELF because some Irix 5 objects | |
86dc0f79 RH |
1505 | record undefined functions as STT_OBJECT although the definitions |
1506 | are STT_FUNC. */ | |
1507 | unsigned type_change_ok : 1; | |
1508 | ||
bf572ba0 MM |
1509 | /* Whether the backend may use REL relocations. (Some backends use |
1510 | both REL and RELA relocations, and this flag is set for those | |
1511 | backends.) */ | |
1512 | unsigned may_use_rel_p : 1; | |
60bcf0fa | 1513 | |
bf572ba0 MM |
1514 | /* Whether the backend may use RELA relocations. (Some backends use |
1515 | both REL and RELA relocations, and this flag is set for those | |
1516 | backends.) */ | |
1517 | unsigned may_use_rela_p : 1; | |
1518 | ||
1519 | /* Whether the default relocation type is RELA. If a backend with | |
1520 | this flag set wants REL relocations for a particular section, | |
1521 | it must note that explicitly. Similarly, if this flag is clear, | |
60bcf0fa NC |
1522 | and the backend wants RELA relocations for a particular |
1523 | section. */ | |
bf572ba0 MM |
1524 | unsigned default_use_rela_p : 1; |
1525 | ||
d35fd659 RS |
1526 | /* True if PLT and copy relocations should be RELA by default. */ |
1527 | unsigned rela_plts_and_copies_p : 1; | |
1528 | ||
b491616a AM |
1529 | /* Set if RELA relocations for a relocatable link can be handled by |
1530 | generic code. Backends that set this flag need do nothing in the | |
1531 | backend relocate_section routine for relocatable linking. */ | |
1532 | unsigned rela_normal : 1; | |
1533 | ||
64f52338 AM |
1534 | /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT |
1535 | relocations. */ | |
1536 | unsigned dtrel_excludes_plt : 1; | |
1537 | ||
b34976b6 | 1538 | /* TRUE if addresses "naturally" sign extend. This is used when |
86dc0f79 RH |
1539 | swapping in from Elf32 when BFD64. */ |
1540 | unsigned sign_extend_vma : 1; | |
1541 | ||
252b5132 RH |
1542 | unsigned want_got_plt : 1; |
1543 | unsigned plt_readonly : 1; | |
1544 | unsigned want_plt_sym : 1; | |
1545 | unsigned plt_not_loaded : 1; | |
1546 | unsigned plt_alignment : 4; | |
1547 | unsigned can_gc_sections : 1; | |
51b64d56 | 1548 | unsigned can_refcount : 1; |
2517a57f | 1549 | unsigned want_got_sym : 1; |
3018b441 | 1550 | unsigned want_dynbss : 1; |
5474d94f | 1551 | unsigned want_dynrelro : 1; |
6bfdb61b AM |
1552 | |
1553 | /* Targets which do not support physical addressing often require | |
1554 | that the p_paddr field in the section header to be set to zero. | |
1555 | This field indicates whether this behavior is required. */ | |
5e8d7549 | 1556 | unsigned want_p_paddr_set_to_zero : 1; |
6bfdb61b | 1557 | |
a8c75b76 AM |
1558 | /* Target has broken hardware and/or kernel that requires pages not |
1559 | to be mapped twice with different permissions. */ | |
1560 | unsigned no_page_alias : 1; | |
1561 | ||
6bfdb61b AM |
1562 | /* True if an object file lacking a .note.GNU-stack section |
1563 | should be assumed to be requesting exec stack. At least one | |
1564 | other file in the link needs to have a .note.GNU-stack section | |
1565 | for a PT_GNU_STACK segment to be created. */ | |
1566 | unsigned default_execstack : 1; | |
53291d1f AM |
1567 | |
1568 | /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize | |
1569 | in length rather than sec->size in length, if sec->rawsize is | |
1570 | non-zero and smaller than sec->size. */ | |
1571 | unsigned caches_rawsize : 1; | |
f7483970 L |
1572 | |
1573 | /* Address of protected data defined in the shared library may be | |
1574 | external, i.e., due to copy relocation. */ | |
1575 | unsigned extern_protected_data : 1; | |
23ec1e32 MR |
1576 | |
1577 | /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for | |
1578 | static binaries. */ | |
1579 | unsigned always_renumber_dynsyms : 1; | |
a2f63b2e MR |
1580 | |
1581 | /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid' | |
1582 | members use a 16-bit data type. */ | |
1583 | unsigned linux_prpsinfo32_ugid16 : 1; | |
3c9a7b0d MR |
1584 | |
1585 | /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid' | |
1586 | members use a 16-bit data type. */ | |
1587 | unsigned linux_prpsinfo64_ugid16 : 1; | |
252b5132 RH |
1588 | }; |
1589 | ||
d4730f92 BS |
1590 | /* Information about reloc sections associated with a bfd_elf_section_data |
1591 | structure. */ | |
1592 | struct bfd_elf_section_reloc_data | |
1593 | { | |
1594 | /* The ELF header for the reloc section associated with this | |
1595 | section, if any. */ | |
1596 | Elf_Internal_Shdr *hdr; | |
1597 | /* The number of relocations currently assigned to HDR. */ | |
1598 | unsigned int count; | |
1599 | /* The ELF section number of the reloc section. Only used for an | |
1600 | output file. */ | |
1601 | int idx; | |
1602 | /* Used by the backend linker to store the symbol hash table entries | |
1603 | associated with relocs against global symbols. */ | |
1604 | struct elf_link_hash_entry **hashes; | |
1605 | }; | |
1606 | ||
252b5132 RH |
1607 | /* Information stored for each BFD section in an ELF file. This |
1608 | structure is allocated by elf_new_section_hook. */ | |
1609 | ||
1610 | struct bfd_elf_section_data | |
1611 | { | |
1612 | /* The ELF header for this section. */ | |
1613 | Elf_Internal_Shdr this_hdr; | |
0c715baa | 1614 | |
b9c361e0 JL |
1615 | /* INPUT_SECTION_FLAGS if specified in the linker script. */ |
1616 | struct flag_info *section_flag_info; | |
1617 | ||
d4730f92 BS |
1618 | /* Information about the REL and RELA reloc sections associated |
1619 | with this section, if any. */ | |
1620 | struct bfd_elf_section_reloc_data rel, rela; | |
0c715baa | 1621 | |
6dc132d9 | 1622 | /* The ELF section number of this section. */ |
252b5132 | 1623 | int this_idx; |
0c715baa | 1624 | |
f0abc2a1 AM |
1625 | /* Used by the backend linker when generating a shared library to |
1626 | record the dynamic symbol index for a section symbol | |
1627 | corresponding to this section. A value of 0 means that there is | |
1628 | no dynamic symbol for this section. */ | |
1629 | int dynindx; | |
1630 | ||
38ce5b11 L |
1631 | /* A pointer to the linked-to section for SHF_LINK_ORDER. */ |
1632 | asection *linked_to; | |
1633 | ||
252b5132 RH |
1634 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
1635 | rather than RELA, all the r_addend fields will be zero. This | |
1636 | pointer may be NULL. It is used by the backend linker. */ | |
1637 | Elf_Internal_Rela *relocs; | |
0c715baa | 1638 | |
f0abc2a1 AM |
1639 | /* A pointer to a linked list tracking dynamic relocs copied for |
1640 | local symbols. */ | |
c39a58e6 | 1641 | void *local_dynrel; |
0c715baa | 1642 | |
f0abc2a1 AM |
1643 | /* A pointer to the bfd section used for dynamic relocs. */ |
1644 | asection *sreloc; | |
0c715baa | 1645 | |
1126897b AM |
1646 | union { |
1647 | /* Group name, if this section is a member of a group. */ | |
1648 | const char *name; | |
1649 | ||
1650 | /* Group signature sym, if this is the SHT_GROUP section. */ | |
fc0a2244 | 1651 | struct bfd_symbol *id; |
1126897b | 1652 | } group; |
dbb410c3 | 1653 | |
b0956e01 AM |
1654 | /* For a member of a group, points to the SHT_GROUP section. |
1655 | NULL for the SHT_GROUP section itself and non-group sections. */ | |
3d7f7666 L |
1656 | asection *sec_group; |
1657 | ||
b0956e01 AM |
1658 | /* A linked list of member sections in the group. Circular when used by |
1659 | the linker. For the SHT_GROUP section, points at first member. */ | |
dbb410c3 AM |
1660 | asection *next_in_group; |
1661 | ||
9d0a14d3 RS |
1662 | /* The FDEs associated with this section. The u.fde.next_in_section |
1663 | field acts as a chain pointer. */ | |
1664 | struct eh_cie_fde *fde_list; | |
1665 | ||
2f0c68f2 CM |
1666 | /* Link from a text section to its .eh_frame_entry section. */ |
1667 | asection *eh_frame_entry; | |
1668 | ||
f0abc2a1 | 1669 | /* A pointer used for various section optimizations. */ |
c39a58e6 | 1670 | void *sec_info; |
252b5132 RH |
1671 | }; |
1672 | ||
9f296da3 | 1673 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd) |
38ce5b11 | 1674 | #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to) |
9f296da3 AM |
1675 | #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) |
1676 | #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) | |
fe944acf | 1677 | #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info) |
9f296da3 AM |
1678 | #define elf_group_name(sec) (elf_section_data(sec)->group.name) |
1679 | #define elf_group_id(sec) (elf_section_data(sec)->group.id) | |
1680 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) | |
1681 | #define elf_fde_list(sec) (elf_section_data(sec)->fde_list) | |
3d7f7666 | 1682 | #define elf_sec_group(sec) (elf_section_data(sec)->sec_group) |
2f0c68f2 | 1683 | #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry) |
252b5132 | 1684 | |
24718e3b | 1685 | #define xvec_get_elf_backend_data(xvec) \ |
f7231afc | 1686 | ((const struct elf_backend_data *) (xvec)->backend_data) |
24718e3b | 1687 | |
252b5132 | 1688 | #define get_elf_backend_data(abfd) \ |
24718e3b | 1689 | xvec_get_elf_backend_data ((abfd)->xvec) |
252b5132 | 1690 | |
3de4a297 JM |
1691 | /* The least object attributes (within an attributes subsection) known |
1692 | for any target. Some code assumes that the value 0 is not used and | |
1693 | the field for that attribute can instead be used as a marker to | |
1694 | indicate that attributes have been initialized. */ | |
59e6276b | 1695 | #define LEAST_KNOWN_OBJ_ATTRIBUTE 2 |
3de4a297 | 1696 | |
104d59d1 | 1697 | /* The maximum number of known object attributes for any target. */ |
91e22acd | 1698 | #define NUM_KNOWN_OBJ_ATTRIBUTES 71 |
104d59d1 | 1699 | |
3483fe2e AS |
1700 | /* The value of an object attribute. The type indicates whether the attribute |
1701 | holds and integer, a string, or both. It can also indicate that there can | |
1702 | be no default (i.e. all values must be written to file, even zero). */ | |
104d59d1 JM |
1703 | |
1704 | typedef struct obj_attribute | |
1705 | { | |
3483fe2e AS |
1706 | #define ATTR_TYPE_FLAG_INT_VAL (1 << 0) |
1707 | #define ATTR_TYPE_FLAG_STR_VAL (1 << 1) | |
1708 | #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2) | |
1709 | ||
1710 | #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL) | |
1711 | #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL) | |
1712 | #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT) | |
1713 | ||
104d59d1 JM |
1714 | int type; |
1715 | unsigned int i; | |
1716 | char *s; | |
1717 | } obj_attribute; | |
1718 | ||
1719 | typedef struct obj_attribute_list | |
1720 | { | |
1721 | struct obj_attribute_list *next; | |
5ee4a1ca | 1722 | unsigned int tag; |
104d59d1 JM |
1723 | obj_attribute attr; |
1724 | } obj_attribute_list; | |
1725 | ||
1726 | /* Object attributes may either be defined by the processor ABI, index | |
1727 | OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific | |
1728 | (and possibly also processor-specific), index OBJ_ATTR_GNU. */ | |
1729 | #define OBJ_ATTR_PROC 0 | |
1730 | #define OBJ_ATTR_GNU 1 | |
1731 | #define OBJ_ATTR_FIRST OBJ_ATTR_PROC | |
1732 | #define OBJ_ATTR_LAST OBJ_ATTR_GNU | |
1733 | ||
1734 | /* The following object attribute tags are taken as generic, for all | |
1735 | targets and for "gnu" where there is no target standard. */ | |
1736 | enum | |
1737 | { | |
1738 | Tag_NULL = 0, | |
1739 | Tag_File = 1, | |
1740 | Tag_Section = 2, | |
1741 | Tag_Symbol = 3, | |
1742 | Tag_compatibility = 32 | |
1743 | }; | |
1744 | ||
e21e5835 NC |
1745 | /* The following struct stores information about every SystemTap section |
1746 | found in the object file. */ | |
1747 | struct sdt_note | |
1748 | { | |
1749 | struct sdt_note *next; | |
1750 | bfd_size_type size; | |
1751 | bfd_byte data[1]; | |
1752 | }; | |
1753 | ||
228e534f AM |
1754 | /* tdata information grabbed from an elf core file. */ |
1755 | struct core_elf_obj_tdata | |
1756 | { | |
1757 | int signal; | |
1758 | int pid; | |
1759 | int lwpid; | |
1760 | char* program; | |
1761 | char* command; | |
1762 | }; | |
1763 | ||
c0355132 AM |
1764 | /* Extra tdata information held for output ELF BFDs. */ |
1765 | struct output_elf_obj_tdata | |
1766 | { | |
1767 | struct elf_segment_map *seg_map; | |
1768 | struct elf_strtab_hash *strtab_ptr; | |
1769 | ||
1770 | /* STT_SECTION symbols for each section */ | |
1771 | asymbol **section_syms; | |
1772 | ||
1773 | /* Used to determine if PT_GNU_EH_FRAME segment header should be | |
1774 | created. */ | |
1775 | asection *eh_frame_hdr; | |
1776 | ||
1777 | /* NT_GNU_BUILD_ID note type info. */ | |
1778 | struct | |
1779 | { | |
1780 | bfd_boolean (*after_write_object_contents) (bfd *); | |
1781 | const char *style; | |
1782 | asection *sec; | |
1783 | } build_id; | |
1784 | ||
1785 | /* Records the result of `get_program_header_size'. */ | |
1786 | bfd_size_type program_header_size; | |
1787 | ||
1788 | /* Used when laying out sections. */ | |
1789 | file_ptr next_file_pos; | |
1790 | ||
1791 | int num_section_syms; | |
1792 | unsigned int shstrtab_section, strtab_section; | |
1793 | ||
1794 | /* Segment flags for the PT_GNU_STACK segment. */ | |
1795 | unsigned int stack_flags; | |
1796 | ||
1797 | /* This is set to TRUE if the object was created by the backend | |
1798 | linker. */ | |
1799 | bfd_boolean linker; | |
1800 | ||
1801 | /* Used to determine if the e_flags field has been initialized */ | |
1802 | bfd_boolean flags_init; | |
1803 | }; | |
1804 | ||
13a2df29 L |
1805 | /* Indicate if the bfd contains symbols that have the STT_GNU_IFUNC |
1806 | symbol type or STB_GNU_UNIQUE binding. Used to set the osabi | |
1807 | field in the ELF header structure. */ | |
1808 | enum elf_gnu_symbols | |
9eaff861 AO |
1809 | { |
1810 | elf_gnu_symbol_none = 0, | |
1811 | elf_gnu_symbol_any = 1 << 0, | |
1812 | elf_gnu_symbol_ifunc = (elf_gnu_symbol_any | 1 << 1), | |
1813 | elf_gnu_symbol_unique = (elf_gnu_symbol_any | 1 << 2), | |
1814 | elf_gnu_symbol_all = (elf_gnu_symbol_ifunc | elf_gnu_symbol_unique) | |
1815 | }; | |
13a2df29 | 1816 | |
6a40cf0c NC |
1817 | typedef struct elf_section_list |
1818 | { | |
07d6d2b8 AM |
1819 | Elf_Internal_Shdr hdr; |
1820 | unsigned int ndx; | |
6a40cf0c NC |
1821 | struct elf_section_list * next; |
1822 | } elf_section_list; | |
9eaff861 | 1823 | |
252b5132 RH |
1824 | /* Some private data is stashed away for future use using the tdata pointer |
1825 | in the bfd structure. */ | |
1826 | ||
1827 | struct elf_obj_tdata | |
1828 | { | |
1829 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ | |
1830 | Elf_Internal_Shdr **elf_sect_ptr; | |
1831 | Elf_Internal_Phdr *phdr; | |
252b5132 RH |
1832 | Elf_Internal_Shdr symtab_hdr; |
1833 | Elf_Internal_Shdr shstrtab_hdr; | |
1834 | Elf_Internal_Shdr strtab_hdr; | |
1835 | Elf_Internal_Shdr dynsymtab_hdr; | |
1836 | Elf_Internal_Shdr dynstrtab_hdr; | |
1837 | Elf_Internal_Shdr dynversym_hdr; | |
1838 | Elf_Internal_Shdr dynverref_hdr; | |
1839 | Elf_Internal_Shdr dynverdef_hdr; | |
6a40cf0c | 1840 | elf_section_list * symtab_shndx_list; |
dbb410c3 AM |
1841 | bfd_vma gp; /* The gp value */ |
1842 | unsigned int gp_size; /* The gp size */ | |
c0355132 | 1843 | unsigned int num_elf_sections; /* elf_sect_ptr size */ |
dbb410c3 | 1844 | |
252b5132 RH |
1845 | /* A mapping from external symbols to entries in the linker hash |
1846 | table, used when linking. This is indexed by the symbol index | |
1847 | minus the sh_info field of the symbol table header. */ | |
1848 | struct elf_link_hash_entry **sym_hashes; | |
1849 | ||
5cab59f6 AM |
1850 | /* Track usage and final offsets of GOT entries for local symbols. |
1851 | This array is indexed by symbol index. Elements are used | |
1852 | identically to "got" in struct elf_link_hash_entry. */ | |
252b5132 RH |
1853 | union |
1854 | { | |
1855 | bfd_signed_vma *refcounts; | |
1856 | bfd_vma *offsets; | |
5cab59f6 | 1857 | struct got_entry **ents; |
252b5132 RH |
1858 | } local_got; |
1859 | ||
252b5132 RH |
1860 | /* The linker ELF emulation code needs to let the backend ELF linker |
1861 | know what filename should be used for a dynamic object if the | |
1862 | dynamic object is found using a search. The emulation code then | |
1863 | sometimes needs to know what name was actually used. Until the | |
1864 | file has been added to the linker symbol table, this field holds | |
1865 | the name the linker wants. After it has been added, it holds the | |
1866 | name actually used, which will be the DT_SONAME entry if there is | |
1867 | one. */ | |
1868 | const char *dt_name; | |
1869 | ||
7ee314fa | 1870 | /* The linker emulation needs to know what audit libs |
23209a78 | 1871 | are used by a dynamic object. */ |
7ee314fa AM |
1872 | const char *dt_audit; |
1873 | ||
252b5132 | 1874 | /* Used by find_nearest_line entry point. */ |
c39a58e6 | 1875 | void *line_info; |
252b5132 | 1876 | |
3e932841 | 1877 | /* A place to stash dwarf1 info for this bfd. */ |
252b5132 RH |
1878 | struct dwarf1_debug *dwarf1_find_line_info; |
1879 | ||
3e932841 | 1880 | /* A place to stash dwarf2 info for this bfd. */ |
c39a58e6 | 1881 | void *dwarf2_find_line_info; |
252b5132 | 1882 | |
619a703e AM |
1883 | /* Stash away info for yet another find line/function variant. */ |
1884 | void *elf_find_function_cache; | |
1885 | ||
252b5132 RH |
1886 | /* Number of symbol version definitions we are about to emit. */ |
1887 | unsigned int cverdefs; | |
1888 | ||
1889 | /* Number of symbol version references we are about to emit. */ | |
1890 | unsigned int cverrefs; | |
1891 | ||
1892 | /* Symbol version definitions in external objects. */ | |
1893 | Elf_Internal_Verdef *verdef; | |
1894 | ||
1895 | /* Symbol version references to external objects. */ | |
1896 | Elf_Internal_Verneed *verref; | |
1897 | ||
9d0a14d3 RS |
1898 | /* A pointer to the .eh_frame section. */ |
1899 | asection *eh_frame_section; | |
1900 | ||
c0f00686 | 1901 | /* Symbol buffer. */ |
c15f73f9 | 1902 | void *symbuf; |
104d59d1 | 1903 | |
46bed679 L |
1904 | /* List of GNU properties. Will be updated by setup_gnu_properties |
1905 | after all input GNU properties are merged for output. */ | |
1906 | elf_property_list *properties; | |
1907 | ||
104d59d1 JM |
1908 | obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES]; |
1909 | obj_attribute_list *other_obj_attributes[2]; | |
20a761b5 | 1910 | |
e21e5835 NC |
1911 | /* Linked-list containing information about every Systemtap section |
1912 | found in the object file. Each section corresponds to one entry | |
1913 | in the list. */ | |
1914 | struct sdt_note *sdt_note_head; | |
1915 | ||
c0355132 AM |
1916 | Elf_Internal_Shdr **group_sect_ptr; |
1917 | int num_group; | |
1918 | ||
564e11c9 JW |
1919 | /* Index into group_sect_ptr, updated by setup_group when finding a |
1920 | section's group. Used to optimize subsequent group searches. */ | |
1921 | unsigned int group_search_offset; | |
1922 | ||
6a40cf0c | 1923 | unsigned int symtab_section, dynsymtab_section; |
c0355132 | 1924 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
d8045f23 | 1925 | |
0ffa91dd NC |
1926 | /* An identifier used to distinguish different target |
1927 | specific extensions to this structure. */ | |
a5b4ee94 | 1928 | ENUM_BITFIELD (elf_target_id) object_id : 6; |
228e534f | 1929 | |
c0355132 AM |
1930 | /* Whether a dyanmic object was specified normally on the linker |
1931 | command line, or was specified when --as-needed was in effect, | |
1932 | or was found via a DT_NEEDED entry. */ | |
a5b4ee94 L |
1933 | ENUM_BITFIELD (dynamic_lib_link_class) dyn_lib_class : 4; |
1934 | ||
1935 | /* Whether if the bfd contains symbols that have the STT_GNU_IFUNC | |
1936 | symbol type or STB_GNU_UNIQUE binding. */ | |
1937 | ENUM_BITFIELD (elf_gnu_symbols) has_gnu_symbols : 3; | |
1938 | ||
1939 | /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED | |
1940 | property. */ | |
1941 | unsigned int has_no_copy_on_protected : 1; | |
c0355132 AM |
1942 | |
1943 | /* Irix 5 often screws up the symbol table, sorting local symbols | |
1944 | after global symbols. This flag is set if the symbol table in | |
1945 | this BFD appears to be screwed up. If it is, we ignore the | |
1946 | sh_info field in the symbol table header, and always read all the | |
1947 | symbols. */ | |
a5b4ee94 | 1948 | unsigned int bad_symtab : 1; |
c0355132 | 1949 | |
228e534f AM |
1950 | /* Information grabbed from an elf core file. */ |
1951 | struct core_elf_obj_tdata *core; | |
c0355132 AM |
1952 | |
1953 | /* More information held for output ELF BFDs. */ | |
1954 | struct output_elf_obj_tdata *o; | |
252b5132 RH |
1955 | }; |
1956 | ||
1957 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) | |
0ffa91dd NC |
1958 | |
1959 | #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id) | |
c0355132 | 1960 | #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size) |
252b5132 RH |
1961 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
1962 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) | |
9ad5cbcf | 1963 | #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
c0355132 AM |
1964 | #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map) |
1965 | #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos) | |
1966 | #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr) | |
1967 | #define elf_linker(bfd) (elf_tdata(bfd) -> o->linker) | |
1968 | #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags) | |
1969 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr) | |
252b5132 | 1970 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
6a40cf0c | 1971 | #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list) |
c0355132 AM |
1972 | #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section) |
1973 | #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section) | |
0ffa91dd | 1974 | #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr) |
252b5132 RH |
1975 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
1976 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) | |
1977 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) | |
1978 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) | |
9d0a14d3 RS |
1979 | #define elf_eh_frame_section(bfd) \ |
1980 | (elf_tdata(bfd) -> eh_frame_section) | |
c0355132 AM |
1981 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms) |
1982 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms) | |
252b5132 RH |
1983 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
1984 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) | |
1985 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) | |
1986 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) | |
1987 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) | |
1988 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) | |
1989 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) | |
5cab59f6 | 1990 | #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents) |
252b5132 | 1991 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
7ee314fa | 1992 | #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit) |
4a43e768 | 1993 | #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class) |
252b5132 | 1994 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
c0355132 | 1995 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init) |
104d59d1 JM |
1996 | #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes) |
1997 | #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes) | |
1998 | #define elf_known_obj_attributes_proc(bfd) \ | |
1999 | (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
2000 | #define elf_other_obj_attributes_proc(bfd) \ | |
2001 | (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
46bed679 | 2002 | #define elf_properties(bfd) (elf_tdata (bfd) -> properties) |
a5b4ee94 L |
2003 | #define elf_has_no_copy_on_protected(bfd) \ |
2004 | (elf_tdata(bfd) -> has_no_copy_on_protected) | |
252b5132 RH |
2005 | \f |
2006 | extern void _bfd_elf_swap_verdef_in | |
c39a58e6 | 2007 | (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *); |
252b5132 | 2008 | extern void _bfd_elf_swap_verdef_out |
c39a58e6 | 2009 | (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *); |
252b5132 | 2010 | extern void _bfd_elf_swap_verdaux_in |
c39a58e6 | 2011 | (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *); |
252b5132 | 2012 | extern void _bfd_elf_swap_verdaux_out |
c39a58e6 | 2013 | (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *); |
252b5132 | 2014 | extern void _bfd_elf_swap_verneed_in |
c39a58e6 | 2015 | (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *); |
252b5132 | 2016 | extern void _bfd_elf_swap_verneed_out |
c39a58e6 | 2017 | (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *); |
252b5132 | 2018 | extern void _bfd_elf_swap_vernaux_in |
c39a58e6 | 2019 | (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *); |
252b5132 | 2020 | extern void _bfd_elf_swap_vernaux_out |
c39a58e6 | 2021 | (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *); |
252b5132 | 2022 | extern void _bfd_elf_swap_versym_in |
c39a58e6 | 2023 | (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *); |
252b5132 | 2024 | extern void _bfd_elf_swap_versym_out |
c39a58e6 | 2025 | (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *); |
252b5132 | 2026 | |
cb33740c | 2027 | extern unsigned int _bfd_elf_section_from_bfd_section |
c39a58e6 | 2028 | (bfd *, asection *); |
252b5132 | 2029 | extern char *bfd_elf_string_from_elf_section |
c39a58e6 | 2030 | (bfd *, unsigned, unsigned); |
6cdc0ccc | 2031 | extern Elf_Internal_Sym *bfd_elf_get_elf_syms |
c39a58e6 AM |
2032 | (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *, |
2033 | Elf_External_Sym_Shndx *); | |
0e2cfdce | 2034 | extern const char *bfd_elf_sym_name |
26c61ae5 | 2035 | (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *); |
252b5132 | 2036 | |
b34976b6 | 2037 | extern bfd_boolean _bfd_elf_copy_private_bfd_data |
c39a58e6 | 2038 | (bfd *, bfd *); |
b34976b6 | 2039 | extern bfd_boolean _bfd_elf_print_private_bfd_data |
c39a58e6 | 2040 | (bfd *, void *); |
60bb06bc | 2041 | const char * _bfd_elf_get_symbol_version_string |
bb4d2ac2 | 2042 | (bfd *, asymbol *, bfd_boolean *); |
dc810e39 | 2043 | extern void bfd_elf_print_symbol |
c39a58e6 | 2044 | (bfd *, void *, asymbol *, bfd_print_symbol_type); |
dc810e39 | 2045 | |
8c946ed5 | 2046 | extern unsigned int _bfd_elf_eh_frame_address_size |
76c20d54 | 2047 | (bfd *, const asection *); |
ec3391e7 AO |
2048 | extern bfd_byte _bfd_elf_encode_eh_address |
2049 | (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset, | |
2050 | asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded); | |
2051 | extern bfd_boolean _bfd_elf_can_make_relative | |
2052 | (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section); | |
2053 | ||
dc810e39 | 2054 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
7e612e98 AM |
2055 | (const struct bfd_link_info *, const asection *, |
2056 | const Elf_Internal_Rela *); | |
f8df10f4 | 2057 | extern bfd_vma _bfd_elf_rela_local_sym |
8517fae7 | 2058 | (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *); |
c629eae0 | 2059 | extern bfd_vma _bfd_elf_rel_local_sym |
c39a58e6 | 2060 | (bfd *, Elf_Internal_Sym *, asection **, bfd_vma); |
c629eae0 | 2061 | extern bfd_vma _bfd_elf_section_offset |
c39a58e6 | 2062 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
db6751f2 | 2063 | |
dc810e39 | 2064 | extern unsigned long bfd_elf_hash |
c39a58e6 | 2065 | (const char *); |
fdc90cb4 JJ |
2066 | extern unsigned long bfd_elf_gnu_hash |
2067 | (const char *); | |
252b5132 | 2068 | |
dc810e39 | 2069 | extern bfd_reloc_status_type bfd_elf_generic_reloc |
c39a58e6 | 2070 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
0ffa91dd | 2071 | extern bfd_boolean bfd_elf_allocate_object |
4dfe6ac6 | 2072 | (bfd *, size_t, enum elf_target_id); |
ae95ffa6 | 2073 | extern bfd_boolean bfd_elf_make_object |
c39a58e6 | 2074 | (bfd *); |
b34976b6 | 2075 | extern bfd_boolean bfd_elf_mkcorefile |
c39a58e6 | 2076 | (bfd *); |
b34976b6 | 2077 | extern bfd_boolean _bfd_elf_make_section_from_shdr |
6dc132d9 | 2078 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
b34976b6 | 2079 | extern bfd_boolean _bfd_elf_make_section_from_phdr |
c39a58e6 | 2080 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
252b5132 | 2081 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
c39a58e6 | 2082 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
252b5132 | 2083 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
c39a58e6 | 2084 | (bfd *); |
9f7c3e5e | 2085 | extern void _bfd_elf_link_hash_table_free |
d495ab0d | 2086 | (bfd *); |
c61b8717 | 2087 | extern void _bfd_elf_link_hash_copy_indirect |
fcfa13d2 | 2088 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 2089 | struct elf_link_hash_entry *); |
c61b8717 | 2090 | extern void _bfd_elf_link_hash_hide_symbol |
c39a58e6 | 2091 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
34a87bb0 L |
2092 | extern void _bfd_elf_link_hide_symbol |
2093 | (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *); | |
508c3946 L |
2094 | extern bfd_boolean _bfd_elf_link_hash_fixup_symbol |
2095 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
b34976b6 | 2096 | extern bfd_boolean _bfd_elf_link_hash_table_init |
c39a58e6 AM |
2097 | (struct elf_link_hash_table *, bfd *, |
2098 | struct bfd_hash_entry *(*) | |
66eb6687 | 2099 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *), |
4dfe6ac6 | 2100 | unsigned int, enum elf_target_id); |
b34976b6 | 2101 | extern bfd_boolean _bfd_elf_slurp_version_tables |
fc0e6df6 | 2102 | (bfd *, bfd_boolean); |
b34976b6 | 2103 | extern bfd_boolean _bfd_elf_merge_sections |
c39a58e6 | 2104 | (bfd *, struct bfd_link_info *); |
ecca9871 L |
2105 | extern bfd_boolean _bfd_elf_match_sections_by_type |
2106 | (bfd *, const asection *, bfd *, const asection *); | |
72adc230 AM |
2107 | extern bfd_boolean bfd_elf_is_group_section |
2108 | (bfd *, const struct bfd_section *); | |
43e1669b | 2109 | extern bfd_boolean _bfd_elf_section_already_linked |
c77ec726 | 2110 | (bfd *, asection *, struct bfd_link_info *); |
1126897b | 2111 | extern void bfd_elf_set_group_contents |
c39a58e6 | 2112 | (bfd *, asection *, void *); |
76359541 TP |
2113 | extern unsigned int _bfd_elf_filter_global_symbols |
2114 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
01b3c8ab | 2115 | extern asection *_bfd_elf_check_kept_section |
c0f00686 | 2116 | (asection *, struct bfd_link_info *); |
dbaa2011 | 2117 | #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms |
1338dd10 PB |
2118 | extern void _bfd_elf_copy_link_hash_symbol_type |
2119 | (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *); | |
d0bf826b AM |
2120 | extern bfd_boolean _bfd_elf_size_group_sections |
2121 | (struct bfd_link_info *); | |
2122 | extern bfd_boolean _bfd_elf_fixup_group_sections | |
2123 | (bfd *, asection *); | |
80fccad2 BW |
2124 | extern bfd_boolean _bfd_elf_copy_private_header_data |
2125 | (bfd *, bfd *); | |
b34976b6 | 2126 | extern bfd_boolean _bfd_elf_copy_private_symbol_data |
c39a58e6 | 2127 | (bfd *, asymbol *, bfd *, asymbol *); |
ccd2ec6a L |
2128 | #define _bfd_generic_init_private_section_data \ |
2129 | _bfd_elf_init_private_section_data | |
2130 | extern bfd_boolean _bfd_elf_init_private_section_data | |
2131 | (bfd *, asection *, bfd *, asection *, struct bfd_link_info *); | |
b34976b6 | 2132 | extern bfd_boolean _bfd_elf_copy_private_section_data |
c39a58e6 | 2133 | (bfd *, asection *, bfd *, asection *); |
b34976b6 | 2134 | extern bfd_boolean _bfd_elf_write_object_contents |
c39a58e6 | 2135 | (bfd *); |
b34976b6 | 2136 | extern bfd_boolean _bfd_elf_write_corefile_contents |
c39a58e6 | 2137 | (bfd *); |
b34976b6 | 2138 | extern bfd_boolean _bfd_elf_set_section_contents |
0f867abe | 2139 | (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
dc810e39 | 2140 | extern long _bfd_elf_get_symtab_upper_bound |
c39a58e6 | 2141 | (bfd *); |
6cee3f79 | 2142 | extern long _bfd_elf_canonicalize_symtab |
c39a58e6 | 2143 | (bfd *, asymbol **); |
dc810e39 | 2144 | extern long _bfd_elf_get_dynamic_symtab_upper_bound |
c39a58e6 | 2145 | (bfd *); |
dc810e39 | 2146 | extern long _bfd_elf_canonicalize_dynamic_symtab |
c39a58e6 | 2147 | (bfd *, asymbol **); |
4c45e5c9 | 2148 | extern long _bfd_elf_get_synthetic_symtab |
c9727e01 | 2149 | (bfd *, long, asymbol **, long, asymbol **, asymbol **); |
dc810e39 | 2150 | extern long _bfd_elf_get_reloc_upper_bound |
c39a58e6 | 2151 | (bfd *, sec_ptr); |
dc810e39 | 2152 | extern long _bfd_elf_canonicalize_reloc |
c39a58e6 | 2153 | (bfd *, sec_ptr, arelent **, asymbol **); |
83bac4b0 NC |
2154 | extern asection * _bfd_elf_get_dynamic_reloc_section |
2155 | (bfd *, asection *, bfd_boolean); | |
2156 | extern asection * _bfd_elf_make_dynamic_reloc_section | |
2157 | (asection *, bfd *, unsigned int, bfd *, bfd_boolean); | |
dc810e39 | 2158 | extern long _bfd_elf_get_dynamic_reloc_upper_bound |
c39a58e6 | 2159 | (bfd *); |
dc810e39 | 2160 | extern long _bfd_elf_canonicalize_dynamic_reloc |
c39a58e6 | 2161 | (bfd *, arelent **, asymbol **); |
dc810e39 | 2162 | extern asymbol *_bfd_elf_make_empty_symbol |
c39a58e6 | 2163 | (bfd *); |
dc810e39 | 2164 | extern void _bfd_elf_get_symbol_info |
c39a58e6 | 2165 | (bfd *, asymbol *, symbol_info *); |
b34976b6 | 2166 | extern bfd_boolean _bfd_elf_is_local_label_name |
c39a58e6 | 2167 | (bfd *, const char *); |
dc810e39 | 2168 | extern alent *_bfd_elf_get_lineno |
c39a58e6 | 2169 | (bfd *, asymbol *); |
b34976b6 | 2170 | extern bfd_boolean _bfd_elf_set_arch_mach |
c39a58e6 | 2171 | (bfd *, enum bfd_architecture, unsigned long); |
b34976b6 | 2172 | extern bfd_boolean _bfd_elf_find_nearest_line |
fb167eb2 AM |
2173 | (bfd *, asymbol **, asection *, bfd_vma, |
2174 | const char **, const char **, unsigned int *, unsigned int *); | |
5420f73d L |
2175 | extern bfd_boolean _bfd_elf_find_line |
2176 | (bfd *, asymbol **, asymbol *, const char **, unsigned int *); | |
4ab527b0 FF |
2177 | extern bfd_boolean _bfd_elf_find_inliner_info |
2178 | (bfd *, const char **, const char **, unsigned int *); | |
923b198a | 2179 | extern asymbol *_bfd_elf_find_function |
e00e8198 | 2180 | (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **); |
252b5132 RH |
2181 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
2182 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
dc810e39 | 2183 | extern int _bfd_elf_sizeof_headers |
a6b96beb | 2184 | (bfd *, struct bfd_link_info *); |
b34976b6 | 2185 | extern bfd_boolean _bfd_elf_new_section_hook |
c39a58e6 | 2186 | (bfd *, asection *); |
551b43fd AM |
2187 | extern const struct bfd_elf_special_section *_bfd_elf_get_special_section |
2188 | (const char *, const struct bfd_elf_special_section *, unsigned int); | |
7dcb9820 | 2189 | extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr |
551b43fd | 2190 | (bfd *, asection *); |
252b5132 | 2191 | |
099bb8fb L |
2192 | extern bfd_boolean _bfd_elf_link_hide_sym_by_version |
2193 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
2194 | ||
252b5132 | 2195 | /* If the target doesn't have reloc handling written yet: */ |
f3185997 | 2196 | extern bfd_boolean _bfd_elf_no_info_to_howto |
c39a58e6 | 2197 | (bfd *, arelent *, Elf_Internal_Rela *); |
dc810e39 | 2198 | |
b34976b6 | 2199 | extern bfd_boolean bfd_section_from_shdr |
c39a58e6 | 2200 | (bfd *, unsigned int shindex); |
b34976b6 | 2201 | extern bfd_boolean bfd_section_from_phdr |
c39a58e6 | 2202 | (bfd *, Elf_Internal_Phdr *, int); |
dc810e39 AM |
2203 | |
2204 | extern int _bfd_elf_symbol_from_bfd_symbol | |
c39a58e6 | 2205 | (bfd *, asymbol **); |
dc810e39 | 2206 | |
23209a78 | 2207 | extern Elf_Internal_Sym *bfd_sym_from_r_symndx |
87d72d41 | 2208 | (struct sym_cache *, bfd *, unsigned long); |
dc810e39 | 2209 | extern asection *bfd_section_from_elf_index |
c39a58e6 | 2210 | (bfd *, unsigned int); |
2b0f7ef9 JJ |
2211 | |
2212 | extern struct elf_strtab_hash * _bfd_elf_strtab_init | |
c39a58e6 | 2213 | (void); |
2b0f7ef9 | 2214 | extern void _bfd_elf_strtab_free |
c39a58e6 | 2215 | (struct elf_strtab_hash *); |
ef53be89 | 2216 | extern size_t _bfd_elf_strtab_add |
c39a58e6 | 2217 | (struct elf_strtab_hash *, const char *, bfd_boolean); |
2b0f7ef9 | 2218 | extern void _bfd_elf_strtab_addref |
ef53be89 | 2219 | (struct elf_strtab_hash *, size_t); |
2b0f7ef9 | 2220 | extern void _bfd_elf_strtab_delref |
ef53be89 | 2221 | (struct elf_strtab_hash *, size_t); |
02be4619 | 2222 | extern unsigned int _bfd_elf_strtab_refcount |
ef53be89 | 2223 | (struct elf_strtab_hash *, size_t); |
d45f8bda | 2224 | extern void _bfd_elf_strtab_clear_all_refs |
5b677558 AM |
2225 | (struct elf_strtab_hash *); |
2226 | extern void *_bfd_elf_strtab_save | |
2227 | (struct elf_strtab_hash *); | |
2228 | extern void _bfd_elf_strtab_restore | |
2229 | (struct elf_strtab_hash *, void *); | |
2b0f7ef9 | 2230 | extern bfd_size_type _bfd_elf_strtab_size |
c39a58e6 | 2231 | (struct elf_strtab_hash *); |
2b0f7ef9 | 2232 | extern bfd_size_type _bfd_elf_strtab_offset |
ef53be89 | 2233 | (struct elf_strtab_hash *, size_t); |
b34976b6 | 2234 | extern bfd_boolean _bfd_elf_strtab_emit |
c39a58e6 | 2235 | (bfd *, struct elf_strtab_hash *); |
2b0f7ef9 | 2236 | extern void _bfd_elf_strtab_finalize |
c39a58e6 | 2237 | (struct elf_strtab_hash *); |
2b0f7ef9 | 2238 | |
2f0c68f2 CM |
2239 | extern bfd_boolean bfd_elf_parse_eh_frame_entries |
2240 | (bfd *, struct bfd_link_info *); | |
2241 | extern bfd_boolean _bfd_elf_parse_eh_frame_entry | |
2242 | (struct bfd_link_info *, asection *, struct elf_reloc_cookie *); | |
ca92cecb RS |
2243 | extern void _bfd_elf_parse_eh_frame |
2244 | (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *); | |
2f0c68f2 CM |
2245 | extern bfd_boolean _bfd_elf_end_eh_frame_parsing |
2246 | (struct bfd_link_info *info); | |
2247 | ||
b34976b6 | 2248 | extern bfd_boolean _bfd_elf_discard_section_eh_frame |
c39a58e6 AM |
2249 | (bfd *, struct bfd_link_info *, asection *, |
2250 | bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *); | |
d7153c4a AM |
2251 | extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol |
2252 | (struct elf_link_hash_entry *, void *); | |
b34976b6 | 2253 | extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr |
c39a58e6 | 2254 | (bfd *, struct bfd_link_info *); |
65765700 | 2255 | extern bfd_vma _bfd_elf_eh_frame_section_offset |
92e4ec35 | 2256 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
b34976b6 | 2257 | extern bfd_boolean _bfd_elf_write_section_eh_frame |
c39a58e6 | 2258 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
2f0c68f2 CM |
2259 | bfd_boolean _bfd_elf_write_section_eh_frame_entry |
2260 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); | |
2261 | extern bfd_boolean _bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info *); | |
b34976b6 | 2262 | extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr |
c39a58e6 | 2263 | (bfd *, struct bfd_link_info *); |
9a2a56cc AM |
2264 | extern bfd_boolean _bfd_elf_eh_frame_present |
2265 | (struct bfd_link_info *); | |
2f0c68f2 CM |
2266 | extern bfd_boolean _bfd_elf_eh_frame_entry_present |
2267 | (struct bfd_link_info *); | |
b34976b6 | 2268 | extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr |
c39a58e6 | 2269 | (struct bfd_link_info *); |
65765700 | 2270 | |
fdc90cb4 JJ |
2271 | extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *); |
2272 | ||
dc810e39 | 2273 | extern long _bfd_elf_link_lookup_local_dynindx |
c39a58e6 | 2274 | (struct bfd_link_info *, bfd *, long); |
b34976b6 | 2275 | extern bfd_boolean _bfd_elf_compute_section_file_positions |
c39a58e6 | 2276 | (bfd *, struct bfd_link_info *); |
dc810e39 | 2277 | extern file_ptr _bfd_elf_assign_file_position_for_section |
c39a58e6 | 2278 | (Elf_Internal_Shdr *, file_ptr, bfd_boolean); |
dc810e39 | 2279 | |
b34976b6 | 2280 | extern bfd_boolean _bfd_elf_validate_reloc |
c39a58e6 | 2281 | (bfd *, arelent *); |
dc810e39 | 2282 | |
45d6a902 | 2283 | extern bfd_boolean _bfd_elf_link_create_dynamic_sections |
c39a58e6 | 2284 | (bfd *, struct bfd_link_info *); |
d00dd7dc AM |
2285 | extern bfd_boolean _bfd_elf_omit_section_dynsym_default |
2286 | (bfd *, struct bfd_link_info *, asection *); | |
2287 | extern bfd_boolean _bfd_elf_omit_section_dynsym_all | |
aee6f5b4 | 2288 | (bfd *, struct bfd_link_info *, asection *); |
b34976b6 | 2289 | extern bfd_boolean _bfd_elf_create_dynamic_sections |
c39a58e6 | 2290 | (bfd *, struct bfd_link_info *); |
b34976b6 | 2291 | extern bfd_boolean _bfd_elf_create_got_section |
c39a58e6 | 2292 | (bfd *, struct bfd_link_info *); |
2f0c68f2 CM |
2293 | extern asection *_bfd_elf_section_for_symbol |
2294 | (struct elf_reloc_cookie *, unsigned long, bfd_boolean); | |
d98685ac AM |
2295 | extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym |
2296 | (bfd *, struct bfd_link_info *, asection *, const char *); | |
74541ad4 AM |
2297 | extern void _bfd_elf_init_1_index_section |
2298 | (bfd *, struct bfd_link_info *); | |
2299 | extern void _bfd_elf_init_2_index_sections | |
2300 | (bfd *, struct bfd_link_info *); | |
dc810e39 | 2301 | |
b34976b6 | 2302 | extern bfd_boolean _bfd_elfcore_make_pseudosection |
c39a58e6 | 2303 | (bfd *, char *, size_t, ufile_ptr); |
dc810e39 | 2304 | extern char *_bfd_elfcore_strndup |
c39a58e6 | 2305 | (bfd *, char *, size_t); |
dc810e39 | 2306 | |
45d6a902 | 2307 | extern Elf_Internal_Rela *_bfd_elf_link_read_relocs |
c39a58e6 | 2308 | (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean); |
45d6a902 | 2309 | |
45d6a902 | 2310 | extern bfd_boolean _bfd_elf_link_output_relocs |
eac338cf PB |
2311 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
2312 | struct elf_link_hash_entry **); | |
45d6a902 | 2313 | |
027297b7 | 2314 | extern bfd_boolean _bfd_elf_adjust_dynamic_copy |
6cabe1ea | 2315 | (struct bfd_link_info *, struct elf_link_hash_entry *, asection *); |
027297b7 | 2316 | |
986a241f | 2317 | extern bfd_boolean _bfd_elf_dynamic_symbol_p |
c39a58e6 | 2318 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
f6c52c13 AM |
2319 | |
2320 | extern bfd_boolean _bfd_elf_symbol_refs_local_p | |
c39a58e6 | 2321 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
986a241f | 2322 | |
cdfeee4f | 2323 | extern bfd_reloc_status_type bfd_elf_perform_complex_relocation |
0f02bbd9 | 2324 | (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma); |
d9352518 | 2325 | |
dd863624 | 2326 | extern bfd_boolean _bfd_elf_setup_sections |
3d7f7666 L |
2327 | (bfd *); |
2328 | ||
7dba9362 AM |
2329 | extern struct bfd_link_hash_entry *bfd_elf_define_start_stop |
2330 | (struct bfd_link_info *, const char *, asection *); | |
2331 | ||
78245035 | 2332 | extern void _bfd_elf_post_process_headers (bfd * , struct bfd_link_info *); |
d1036acb | 2333 | |
dc810e39 | 2334 | extern const bfd_target *bfd_elf32_object_p |
c39a58e6 | 2335 | (bfd *); |
dc810e39 | 2336 | extern const bfd_target *bfd_elf32_core_file_p |
c39a58e6 | 2337 | (bfd *); |
dc810e39 | 2338 | extern char *bfd_elf32_core_file_failing_command |
c39a58e6 | 2339 | (bfd *); |
dc810e39 | 2340 | extern int bfd_elf32_core_file_failing_signal |
c39a58e6 | 2341 | (bfd *); |
b34976b6 | 2342 | extern bfd_boolean bfd_elf32_core_file_matches_executable_p |
c39a58e6 | 2343 | (bfd *, bfd *); |
261b8d08 PA |
2344 | extern int bfd_elf32_core_file_pid |
2345 | (bfd *); | |
252b5132 | 2346 | |
8384fb8f | 2347 | extern bfd_boolean bfd_elf32_swap_symbol_in |
c39a58e6 | 2348 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2349 | extern void bfd_elf32_swap_symbol_out |
c39a58e6 | 2350 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2351 | extern void bfd_elf32_swap_reloc_in |
c39a58e6 | 2352 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2353 | extern void bfd_elf32_swap_reloc_out |
c39a58e6 | 2354 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2355 | extern void bfd_elf32_swap_reloca_in |
c39a58e6 | 2356 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2357 | extern void bfd_elf32_swap_reloca_out |
c39a58e6 | 2358 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2359 | extern void bfd_elf32_swap_phdr_in |
c39a58e6 | 2360 | (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2361 | extern void bfd_elf32_swap_phdr_out |
c39a58e6 | 2362 | (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *); |
252b5132 | 2363 | extern void bfd_elf32_swap_dyn_in |
c39a58e6 | 2364 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2365 | extern void bfd_elf32_swap_dyn_out |
c39a58e6 | 2366 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2367 | extern long bfd_elf32_slurp_symbol_table |
c39a58e6 | 2368 | (bfd *, asymbol **, bfd_boolean); |
b34976b6 | 2369 | extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr |
c39a58e6 | 2370 | (bfd *); |
252b5132 | 2371 | extern int bfd_elf32_write_out_phdrs |
c39a58e6 | 2372 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
20a761b5 RM |
2373 | extern bfd_boolean bfd_elf32_checksum_contents |
2374 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
b9f66672 | 2375 | extern void bfd_elf32_write_relocs |
c39a58e6 | 2376 | (bfd *, asection *, void *); |
b34976b6 | 2377 | extern bfd_boolean bfd_elf32_slurp_reloc_table |
c39a58e6 | 2378 | (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 | 2379 | |
dc810e39 | 2380 | extern const bfd_target *bfd_elf64_object_p |
c39a58e6 | 2381 | (bfd *); |
dc810e39 | 2382 | extern const bfd_target *bfd_elf64_core_file_p |
c39a58e6 | 2383 | (bfd *); |
dc810e39 | 2384 | extern char *bfd_elf64_core_file_failing_command |
c39a58e6 | 2385 | (bfd *); |
dc810e39 | 2386 | extern int bfd_elf64_core_file_failing_signal |
c39a58e6 | 2387 | (bfd *); |
b34976b6 | 2388 | extern bfd_boolean bfd_elf64_core_file_matches_executable_p |
c39a58e6 | 2389 | (bfd *, bfd *); |
261b8d08 PA |
2390 | extern int bfd_elf64_core_file_pid |
2391 | (bfd *); | |
252b5132 | 2392 | |
8384fb8f | 2393 | extern bfd_boolean bfd_elf64_swap_symbol_in |
c39a58e6 | 2394 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2395 | extern void bfd_elf64_swap_symbol_out |
c39a58e6 | 2396 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2397 | extern void bfd_elf64_swap_reloc_in |
c39a58e6 | 2398 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2399 | extern void bfd_elf64_swap_reloc_out |
c39a58e6 | 2400 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2401 | extern void bfd_elf64_swap_reloca_in |
c39a58e6 | 2402 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2403 | extern void bfd_elf64_swap_reloca_out |
c39a58e6 | 2404 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2405 | extern void bfd_elf64_swap_phdr_in |
c39a58e6 | 2406 | (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2407 | extern void bfd_elf64_swap_phdr_out |
c39a58e6 | 2408 | (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *); |
252b5132 | 2409 | extern void bfd_elf64_swap_dyn_in |
c39a58e6 | 2410 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2411 | extern void bfd_elf64_swap_dyn_out |
c39a58e6 | 2412 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2413 | extern long bfd_elf64_slurp_symbol_table |
c39a58e6 | 2414 | (bfd *, asymbol **, bfd_boolean); |
b34976b6 | 2415 | extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr |
c39a58e6 | 2416 | (bfd *); |
252b5132 | 2417 | extern int bfd_elf64_write_out_phdrs |
c39a58e6 | 2418 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
20a761b5 RM |
2419 | extern bfd_boolean bfd_elf64_checksum_contents |
2420 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
b9f66672 | 2421 | extern void bfd_elf64_write_relocs |
c39a58e6 | 2422 | (bfd *, asection *, void *); |
b34976b6 | 2423 | extern bfd_boolean bfd_elf64_slurp_reloc_table |
c39a58e6 | 2424 | (bfd *, asection *, asymbol **, bfd_boolean); |
5a580b3a | 2425 | |
13285a1b AM |
2426 | extern bfd_boolean _bfd_elf_default_relocs_compatible |
2427 | (const bfd_target *, const bfd_target *); | |
2428 | ||
2429 | extern bfd_boolean _bfd_elf_relocs_compatible | |
2430 | (const bfd_target *, const bfd_target *); | |
e5034e59 AM |
2431 | extern bfd_boolean _bfd_elf_notice_as_needed |
2432 | (bfd *, struct bfd_link_info *, enum notice_asneeded_action); | |
13285a1b | 2433 | |
8387904d AM |
2434 | extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup |
2435 | (bfd *, struct bfd_link_info *, const char *); | |
4ad4eba5 AM |
2436 | extern bfd_boolean bfd_elf_link_add_symbols |
2437 | (bfd *, struct bfd_link_info *); | |
5a580b3a | 2438 | extern bfd_boolean _bfd_elf_add_dynamic_entry |
c39a58e6 | 2439 | (struct bfd_link_info *, bfd_vma, bfd_vma); |
d9689752 L |
2440 | extern bfd_boolean _bfd_elf_link_check_relocs |
2441 | (bfd *, struct bfd_link_info *); | |
252b5132 | 2442 | |
c152c796 AM |
2443 | extern bfd_boolean bfd_elf_link_record_dynamic_symbol |
2444 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
30b30c21 | 2445 | |
c152c796 | 2446 | extern int bfd_elf_link_record_local_dynamic_symbol |
c39a58e6 | 2447 | (struct bfd_link_info *, bfd *, long); |
252b5132 | 2448 | |
b34976b6 | 2449 | extern bfd_boolean _bfd_elf_close_and_cleanup |
c39a58e6 | 2450 | (bfd *); |
35330cce | 2451 | |
a4d8e49b L |
2452 | extern bfd_boolean _bfd_elf_common_definition |
2453 | (Elf_Internal_Sym *); | |
2454 | ||
2455 | extern unsigned int _bfd_elf_common_section_index | |
2456 | (asection *); | |
2457 | ||
2458 | extern asection *_bfd_elf_common_section | |
2459 | (asection *); | |
2460 | ||
10455f89 HPN |
2461 | extern bfd_vma _bfd_elf_default_got_elt_size |
2462 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *, | |
2463 | unsigned long); | |
2464 | ||
252b5132 | 2465 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
fc0a2244 | 2466 | (bfd *, arelent *, struct bfd_symbol *, void *, |
c39a58e6 | 2467 | asection *, bfd *, char **); |
252b5132 | 2468 | |
c152c796 | 2469 | extern bfd_boolean bfd_elf_final_link |
c39a58e6 | 2470 | (bfd *, struct bfd_link_info *); |
c152c796 | 2471 | |
74f0fb50 AM |
2472 | extern void _bfd_elf_gc_keep |
2473 | (struct bfd_link_info *info); | |
2474 | ||
64d03ab5 AM |
2475 | extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol |
2476 | (struct elf_link_hash_entry *h, void *inf); | |
2477 | ||
c152c796 | 2478 | extern bfd_boolean bfd_elf_gc_sections |
c39a58e6 | 2479 | (bfd *, struct bfd_link_info *); |
c152c796 AM |
2480 | |
2481 | extern bfd_boolean bfd_elf_gc_record_vtinherit | |
c39a58e6 | 2482 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
c152c796 AM |
2483 | |
2484 | extern bfd_boolean bfd_elf_gc_record_vtentry | |
c39a58e6 | 2485 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
252b5132 | 2486 | |
07adf181 AM |
2487 | extern asection *_bfd_elf_gc_mark_hook |
2488 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
2489 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
2490 | ||
5241d853 RS |
2491 | extern asection *_bfd_elf_gc_mark_rsec |
2492 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, | |
1cce69b9 | 2493 | struct elf_reloc_cookie *, bfd_boolean *); |
5241d853 RS |
2494 | |
2495 | extern bfd_boolean _bfd_elf_gc_mark_reloc | |
2496 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, | |
9d0a14d3 RS |
2497 | struct elf_reloc_cookie *); |
2498 | ||
2499 | extern bfd_boolean _bfd_elf_gc_mark_fdes | |
2500 | (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn, | |
2501 | struct elf_reloc_cookie *); | |
5241d853 | 2502 | |
ccfa59ea | 2503 | extern bfd_boolean _bfd_elf_gc_mark |
5241d853 | 2504 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn); |
ccfa59ea | 2505 | |
7f6ab9f8 AM |
2506 | extern bfd_boolean _bfd_elf_gc_mark_extra_sections |
2507 | (struct bfd_link_info *, elf_gc_mark_hook_fn); | |
2508 | ||
c152c796 | 2509 | extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets |
c39a58e6 | 2510 | (bfd *, struct bfd_link_info *); |
c152c796 AM |
2511 | |
2512 | extern bfd_boolean bfd_elf_gc_common_final_link | |
c39a58e6 | 2513 | (bfd *, struct bfd_link_info *); |
252b5132 | 2514 | |
c152c796 | 2515 | extern bfd_boolean bfd_elf_reloc_symbol_deleted_p |
c39a58e6 | 2516 | (bfd_vma, void *); |
73d074b4 | 2517 | |
8ded5a0f | 2518 | extern struct elf_segment_map * _bfd_elf_make_dynamic_segment |
229fcec5 MM |
2519 | (bfd *, asection *); |
2520 | ||
8ded5a0f AM |
2521 | extern bfd_boolean _bfd_elf_map_sections_to_segments |
2522 | (bfd *, struct bfd_link_info *); | |
2523 | ||
fcb93ecf PB |
2524 | extern bfd_boolean _bfd_elf_is_function_type (unsigned int); |
2525 | ||
aef36ac1 AM |
2526 | extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *, |
2527 | bfd_vma *); | |
9f296da3 | 2528 | |
bce964aa | 2529 | extern asection *_bfd_elf_plt_get_reloc_section (bfd *, const char *); |
bd53a53a | 2530 | |
94be91de JB |
2531 | extern int bfd_elf_get_default_section_type (flagword); |
2532 | ||
b9c361e0 JL |
2533 | extern bfd_boolean bfd_elf_lookup_section_flags |
2534 | (struct bfd_link_info *, struct flag_info *, asection *); | |
ae17ab41 | 2535 | |
2ea37f1c NC |
2536 | extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section |
2537 | (bfd * abfd, asection * section); | |
2538 | ||
14b57c7c AM |
2539 | /* PowerPC @tls opcode transform/validate. */ |
2540 | extern unsigned int _bfd_elf_ppc_at_tls_transform | |
2541 | (unsigned int, unsigned int); | |
2542 | /* PowerPC @tprel opcode transform/validate. */ | |
2543 | extern unsigned int _bfd_elf_ppc_at_tprel_transform | |
2544 | (unsigned int, unsigned int); | |
2545 | /* PowerPC elf_object_p tweak. */ | |
2546 | extern bfd_boolean _bfd_elf_ppc_set_arch (bfd *); | |
005d79fd | 2547 | /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */ |
50e03d47 | 2548 | extern void _bfd_elf_ppc_merge_fp_attributes (bfd *, struct bfd_link_info *); |
14b57c7c | 2549 | |
9eaff861 | 2550 | /* Exported interface for writing elf corefile notes. */ |
d4c88bbb | 2551 | extern char *elfcore_write_note |
c39a58e6 | 2552 | (bfd *, char *, int *, const char *, int, const void *, int); |
d4c88bbb | 2553 | extern char *elfcore_write_prpsinfo |
c39a58e6 | 2554 | (bfd *, char *, int *, const char *, const char *); |
d4c88bbb | 2555 | extern char *elfcore_write_prstatus |
c39a58e6 | 2556 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2557 | extern char * elfcore_write_pstatus |
c39a58e6 | 2558 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2559 | extern char *elfcore_write_prfpreg |
c39a58e6 | 2560 | (bfd *, char *, int *, const void *, int); |
d4c88bbb | 2561 | extern char *elfcore_write_prxfpreg |
c39a58e6 | 2562 | (bfd *, char *, int *, const void *, int); |
4339cae0 L |
2563 | extern char *elfcore_write_xstatereg |
2564 | (bfd *, char *, int *, const void *, int); | |
97753bd5 AM |
2565 | extern char *elfcore_write_ppc_vmx |
2566 | (bfd *, char *, int *, const void *, int); | |
89eeb0bc LM |
2567 | extern char *elfcore_write_ppc_vsx |
2568 | (bfd *, char *, int *, const void *, int); | |
d7eeb400 MS |
2569 | extern char *elfcore_write_s390_timer |
2570 | (bfd *, char *, int *, const void *, int); | |
2571 | extern char *elfcore_write_s390_todcmp | |
2572 | (bfd *, char *, int *, const void *, int); | |
2573 | extern char *elfcore_write_s390_todpreg | |
2574 | (bfd *, char *, int *, const void *, int); | |
2575 | extern char *elfcore_write_s390_ctrs | |
2576 | (bfd *, char *, int *, const void *, int); | |
2577 | extern char *elfcore_write_s390_prefix | |
2578 | (bfd *, char *, int *, const void *, int); | |
355b81d9 UW |
2579 | extern char *elfcore_write_s390_last_break |
2580 | (bfd *, char *, int *, const void *, int); | |
2581 | extern char *elfcore_write_s390_system_call | |
2582 | (bfd *, char *, int *, const void *, int); | |
abb3f6cc NC |
2583 | extern char *elfcore_write_s390_tdb |
2584 | (bfd *, char *, int *, const void *, int); | |
4ef9f41a AA |
2585 | extern char *elfcore_write_s390_vxrs_low |
2586 | (bfd *, char *, int *, const void *, int); | |
2587 | extern char *elfcore_write_s390_vxrs_high | |
2588 | (bfd *, char *, int *, const void *, int); | |
88ab90e8 AA |
2589 | extern char *elfcore_write_s390_gs_cb |
2590 | (bfd *, char *, int *, const void *, int); | |
2591 | extern char *elfcore_write_s390_gs_bc | |
2592 | (bfd *, char *, int *, const void *, int); | |
faa9a424 UW |
2593 | extern char *elfcore_write_arm_vfp |
2594 | (bfd *, char *, int *, const void *, int); | |
652451f8 YZ |
2595 | extern char *elfcore_write_aarch_tls |
2596 | (bfd *, char *, int *, const void *, int); | |
2597 | extern char *elfcore_write_aarch_hw_break | |
2598 | (bfd *, char *, int *, const void *, int); | |
2599 | extern char *elfcore_write_aarch_hw_watch | |
2600 | (bfd *, char *, int *, const void *, int); | |
d4c88bbb | 2601 | extern char *elfcore_write_lwpstatus |
c39a58e6 | 2602 | (bfd *, char *, int *, long, int, const void *); |
bb864ac1 CES |
2603 | extern char *elfcore_write_register_note |
2604 | (bfd *, char *, int *, const char *, const void *, int); | |
7c76fa91 | 2605 | |
70a38d42 SDJ |
2606 | /* Internal structure which holds information to be included in the |
2607 | PRPSINFO section of Linux core files. | |
2608 | ||
2609 | This is an "internal" structure in the sense that it should be used | |
2610 | to pass information to BFD (via the `elfcore_write_linux_prpsinfo' | |
2611 | function), so things like endianess shouldn't be an issue. This | |
2612 | structure will eventually be converted in one of the | |
2613 | `elf_external_linux_*' structures and written out to an output bfd | |
2614 | by one of the functions declared below. */ | |
2615 | ||
2616 | struct elf_internal_linux_prpsinfo | |
2617 | { | |
2618 | char pr_state; /* Numeric process state. */ | |
2619 | char pr_sname; /* Char for pr_state. */ | |
2620 | char pr_zomb; /* Zombie. */ | |
2621 | char pr_nice; /* Nice val. */ | |
2622 | unsigned long pr_flag; /* Flags. */ | |
2623 | unsigned int pr_uid; | |
2624 | unsigned int pr_gid; | |
2625 | int pr_pid, pr_ppid, pr_pgrp, pr_sid; | |
2626 | char pr_fname[16 + 1]; /* Filename of executable. */ | |
2627 | char pr_psargs[80 + 1]; /* Initial part of arg list. */ | |
2628 | }; | |
2629 | ||
2630 | /* Linux/most 32-bit archs. */ | |
2631 | extern char *elfcore_write_linux_prpsinfo32 | |
2632 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2633 | ||
2634 | /* Linux/most 64-bit archs. */ | |
2635 | extern char *elfcore_write_linux_prpsinfo64 | |
2636 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2637 | ||
8d6337fe | 2638 | extern bfd *_bfd_elf32_bfd_from_remote_memory |
f0a5d95a | 2639 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2640 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2641 | extern bfd *_bfd_elf64_bfd_from_remote_memory |
f0a5d95a | 2642 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2643 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2644 | |
104d59d1 JM |
2645 | extern bfd_vma bfd_elf_obj_attr_size (bfd *); |
2646 | extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma); | |
5ee4a1ca NC |
2647 | extern int bfd_elf_get_obj_attr_int (bfd *, int, unsigned int); |
2648 | extern void bfd_elf_add_obj_attr_int (bfd *, int, unsigned int, unsigned int); | |
104d59d1 JM |
2649 | #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \ |
2650 | bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca | 2651 | extern void bfd_elf_add_obj_attr_string (bfd *, int, unsigned int, const char *); |
104d59d1 JM |
2652 | #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \ |
2653 | bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca NC |
2654 | extern void bfd_elf_add_obj_attr_int_string (bfd *, int, unsigned int, |
2655 | unsigned int, const char *); | |
7b86a9fa AS |
2656 | #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \ |
2657 | bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \ | |
2658 | (INTVAL), (STRVAL)) | |
104d59d1 JM |
2659 | |
2660 | extern char *_bfd_elf_attr_strdup (bfd *, const char *); | |
2661 | extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *); | |
5ee4a1ca | 2662 | extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, unsigned int); |
104d59d1 | 2663 | extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *); |
50e03d47 AM |
2664 | extern bfd_boolean _bfd_elf_merge_object_attributes |
2665 | (bfd *, struct bfd_link_info *); | |
e8b36cd1 JM |
2666 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int); |
2667 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *); | |
d4730f92 | 2668 | extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec); |
104d59d1 | 2669 | |
46bed679 L |
2670 | extern bfd_boolean _bfd_elf_parse_gnu_properties |
2671 | (bfd *, Elf_Internal_Note *); | |
2672 | extern elf_property * _bfd_elf_get_property | |
2673 | (bfd *, unsigned int, unsigned int); | |
fba37edd | 2674 | extern bfd *_bfd_elf_link_setup_gnu_properties |
46bed679 L |
2675 | (struct bfd_link_info *); |
2676 | ||
6061a67d | 2677 | /* The linker may need to keep track of the number of relocs that it |
e03a8ed8 L |
2678 | decides to copy as dynamic relocs in check_relocs for each symbol. |
2679 | This is so that it can later discard them if they are found to be | |
2680 | unnecessary. We can store the information in a field extending the | |
2681 | regular ELF linker hash table. */ | |
2682 | ||
2683 | struct elf_dyn_relocs | |
2684 | { | |
2685 | struct elf_dyn_relocs *next; | |
2686 | ||
2687 | /* The input section of the reloc. */ | |
2688 | asection *sec; | |
2689 | ||
2690 | /* Total number of relocs copied for the input section. */ | |
2691 | bfd_size_type count; | |
2692 | ||
2693 | /* Number of pc-relative relocs copied for the input section. */ | |
2694 | bfd_size_type pc_count; | |
2695 | }; | |
2696 | ||
2a81c24a | 2697 | extern bfd_boolean _bfd_elf_create_ifunc_sections |
3aa14d16 | 2698 | (bfd *, struct bfd_link_info *); |
e03a8ed8 L |
2699 | extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs |
2700 | (struct bfd_link_info *, struct elf_link_hash_entry *, | |
2df3368d | 2701 | struct elf_dyn_relocs **, bfd_boolean *, unsigned int, |
233cc9c1 | 2702 | unsigned int, unsigned int, bfd_boolean); |
d8045f23 | 2703 | |
351f65ca L |
2704 | extern void elf_append_rela (bfd *, asection *, Elf_Internal_Rela *); |
2705 | extern void elf_append_rel (bfd *, asection *, Elf_Internal_Rela *); | |
2706 | ||
2707 | extern bfd_vma elf64_r_info (bfd_vma, bfd_vma); | |
2708 | extern bfd_vma elf64_r_sym (bfd_vma); | |
2709 | extern bfd_vma elf32_r_info (bfd_vma, bfd_vma); | |
2710 | extern bfd_vma elf32_r_sym (bfd_vma); | |
2711 | ||
3b22753a L |
2712 | /* Large common section. */ |
2713 | extern asection _bfd_elf_large_com_section; | |
2714 | ||
d2149d72 L |
2715 | /* Hash for local symbol with the first section id, ID, in the input |
2716 | file and the local symbol index, SYM. */ | |
2717 | #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \ | |
2718 | (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \ | |
2719 | ^ (SYM) ^ ((ID) >> 16)) | |
2720 | ||
c152c796 AM |
2721 | /* This is the condition under which finish_dynamic_symbol will be called. |
2722 | If our finish_dynamic_symbol isn't called, we'll need to do something | |
2723 | about initializing any .plt and .got entries in relocate_section. */ | |
2724 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ | |
2725 | ((DYN) \ | |
f5385ebf AM |
2726 | && ((SHARED) || !(H)->forced_local) \ |
2727 | && ((H)->dynindx != -1 || (H)->forced_local)) | |
c152c796 | 2728 | |
560e09e9 NC |
2729 | /* This macro is to avoid lots of duplicated code in the body |
2730 | of xxx_relocate_section() in the various elfxx-xxxx.c files. */ | |
b2a8e766 AM |
2731 | #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \ |
2732 | r_symndx, symtab_hdr, sym_hashes, \ | |
2733 | h, sec, relocation, \ | |
62d887d4 | 2734 | unresolved_reloc, warned, ignored) \ |
b2a8e766 AM |
2735 | do \ |
2736 | { \ | |
2737 | /* It seems this can happen with erroneous or unsupported \ | |
2738 | input (mixing a.out and elf in an archive, for example.) */ \ | |
2739 | if (sym_hashes == NULL) \ | |
2740 | return FALSE; \ | |
2741 | \ | |
2742 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \ | |
2743 | \ | |
8a5da09b AM |
2744 | if (info->wrap_hash != NULL \ |
2745 | && (input_section->flags & SEC_DEBUGGING) != 0) \ | |
2746 | h = ((struct elf_link_hash_entry *) \ | |
2747 | unwrap_hash_lookup (info, input_bfd, &h->root)); \ | |
2748 | \ | |
b2a8e766 AM |
2749 | while (h->root.type == bfd_link_hash_indirect \ |
2750 | || h->root.type == bfd_link_hash_warning) \ | |
2751 | h = (struct elf_link_hash_entry *) h->root.u.i.link; \ | |
2752 | \ | |
2753 | warned = FALSE; \ | |
62d887d4 | 2754 | ignored = FALSE; \ |
b2a8e766 AM |
2755 | unresolved_reloc = FALSE; \ |
2756 | relocation = 0; \ | |
2757 | if (h->root.type == bfd_link_hash_defined \ | |
2758 | || h->root.type == bfd_link_hash_defweak) \ | |
2759 | { \ | |
2760 | sec = h->root.u.def.section; \ | |
2761 | if (sec == NULL \ | |
2762 | || sec->output_section == NULL) \ | |
2763 | /* Set a flag that will be cleared later if we find a \ | |
2764 | relocation value for this symbol. output_section \ | |
2765 | is typically NULL for symbols satisfied by a shared \ | |
2766 | library. */ \ | |
2767 | unresolved_reloc = TRUE; \ | |
2768 | else \ | |
2769 | relocation = (h->root.u.def.value \ | |
2770 | + sec->output_section->vma \ | |
2771 | + sec->output_offset); \ | |
2772 | } \ | |
2773 | else if (h->root.type == bfd_link_hash_undefweak) \ | |
2774 | ; \ | |
2775 | else if (info->unresolved_syms_in_objects == RM_IGNORE \ | |
2776 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ | |
62d887d4 | 2777 | ignored = TRUE; \ |
0e1862bb | 2778 | else if (!bfd_link_relocatable (info)) \ |
b2a8e766 | 2779 | { \ |
5a580b3a AM |
2780 | bfd_boolean err; \ |
2781 | err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \ | |
2782 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \ | |
1a72702b AM |
2783 | (*info->callbacks->undefined_symbol) (info, \ |
2784 | h->root.root.string, \ | |
2785 | input_bfd, \ | |
2786 | input_section, \ | |
2787 | rel->r_offset, err); \ | |
b2a8e766 AM |
2788 | warned = TRUE; \ |
2789 | } \ | |
c7e2358a AM |
2790 | (void) unresolved_reloc; \ |
2791 | (void) warned; \ | |
62d887d4 | 2792 | (void) ignored; \ |
b2a8e766 | 2793 | } \ |
560e09e9 NC |
2794 | while (0) |
2795 | ||
0672748a L |
2796 | /* This macro is to avoid lots of duplicated code in the body of the |
2797 | loop over relocations in xxx_relocate_section() in the various | |
2798 | elfxx-xxxx.c files. | |
23209a78 | 2799 | |
0672748a L |
2800 | Handle relocations against symbols from removed linkonce sections, |
2801 | or sections discarded by a linker script. When doing a relocatable | |
2802 | link, we remove such relocations. Otherwise, we just want the | |
2803 | section contents zeroed and avoid any special processing. */ | |
2804 | #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \ | |
545fd46b MR |
2805 | rel, count, relend, \ |
2806 | howto, index, contents) \ | |
0672748a | 2807 | { \ |
a134cc9b | 2808 | int i_; \ |
e4067dbb | 2809 | _bfd_clear_contents (howto, input_bfd, input_section, \ |
545fd46b | 2810 | contents + rel[index].r_offset); \ |
e4067dbb | 2811 | \ |
0e1862bb | 2812 | if (bfd_link_relocatable (info) \ |
0672748a L |
2813 | && (input_section->flags & SEC_DEBUGGING)) \ |
2814 | { \ | |
2815 | /* Only remove relocations in debug sections since other \ | |
2816 | sections may require relocations. */ \ | |
2817 | Elf_Internal_Shdr *rel_hdr; \ | |
2818 | \ | |
d4730f92 | 2819 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \ |
0672748a L |
2820 | \ |
2821 | /* Avoid empty output section. */ \ | |
86f7d49b | 2822 | if (rel_hdr->sh_size > rel_hdr->sh_entsize) \ |
0672748a | 2823 | { \ |
86f7d49b | 2824 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
d4730f92 | 2825 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); \ |
86f7d49b | 2826 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
0672748a | 2827 | \ |
545fd46b MR |
2828 | memmove (rel, rel + count, \ |
2829 | (relend - rel - count) * sizeof (*rel)); \ | |
0672748a | 2830 | \ |
056bafd4 | 2831 | input_section->reloc_count -= count; \ |
545fd46b | 2832 | relend -= count; \ |
0672748a L |
2833 | rel--; \ |
2834 | continue; \ | |
2835 | } \ | |
2836 | } \ | |
2837 | \ | |
a134cc9b | 2838 | for (i_ = 0; i_ < count; i_++) \ |
545fd46b | 2839 | { \ |
a134cc9b HPN |
2840 | rel[i_].r_info = 0; \ |
2841 | rel[i_].r_addend = 0; \ | |
545fd46b MR |
2842 | } \ |
2843 | rel += count - 1; \ | |
0672748a L |
2844 | continue; \ |
2845 | } | |
2846 | ||
a8685210 | 2847 | /* Will a symbol be bound to the definition within the shared |
6f8bcf84 | 2848 | library, if any. A unique symbol can never be bound locally. */ |
55255dae | 2849 | #define SYMBOLIC_BIND(INFO, H) \ |
6f8bcf84 | 2850 | (!(H)->unique_global \ |
487b6440 AM |
2851 | && ((INFO)->symbolic \ |
2852 | || (H)->start_stop \ | |
2853 | || ((INFO)->dynamic && !(H)->dynamic))) | |
55255dae | 2854 | |
55172d69 PA |
2855 | #ifdef __cplusplus |
2856 | } | |
2857 | #endif | |
252b5132 | 2858 | #endif /* _LIBELF_H_ */ |